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Larvae of the Smallscaled Spinycheek Sleeper (Eleotris perniger) in transition from saltwater to freshwater were identified using COI and 16S gene sequences and the morphology and color pattern were then described. Available freshwater habitat for this species on Montserrat is minimal and continued existence is threatened by potential water withdrawals.

A study of the fish status of Kwa falls water body was carried out for three months (August-October) and a total of 562 fish representing 12 species belonging to 11 genera from 10 families and 6 orders were sampled. The family Clariidae was represented by Clarias gariepinus, Cichlidae by 2 species: Oreochromis niloticus and Tilapia zillii, Mockokidae by Synodontis omias and Schilbeidae by Schilbe uranoscopus. Claroteidae by 2 species: Chrysichthys nigrodigitatus and Chrysichthys longipinnis, Mugilidae by Mugil falcipinnis. The rest includes Paralichthyidae (Citharichthys stamflii), Characinidae (Sarcodaces odoe), Eleotridae (Eleotris vittata) and the Cyprinidae (Barilius niloticus). Siluriformes and Perciformes were the most abundant orders accounting for 72.2% and 14.8% of the total landings respectively while the species Chrysichthys nigrodigitatus (313), C. longipinnis (72) and Oreochromis niloticus (56) dominated the overall catch constituting 87.5%. Monthly differentiation in the diversity indices revealed higher values for the month of October than the month of August and September. The Shannon-wiener index (H’) obtained were within the range of 0.75 to 1.74 and showed significant difference between reaches, with downstream reaches having higher diversity throughout the sampling period. Equitability values (E) were generally low in all the reaches sampled. The spatial and seasonal differences were significant at p

11. Eleotris acanthopomus Bleeker, 1853, Native Fig. 30 Etymology: Eleotris: the name of a Nile fish, eleotris; acanthopomus: refers to the downward-pointing spine at the posterior margin of the preoperculum. Common name: Spine-cheek Gudgeon. Taxonomy: Eleotris acanthopomus was described by Bleeker [P.] 1853:275 [Natuurkundig Tijdschrift voor Nederlandsch Indië v. 4 (no. 2)] from Western Sumatra, Indonesia. Holotype (unique): RMNH 25934. Short description: D VI –I, 8; A I, 8; Pt 16; P2 I, 5; LR 51; TR 16; Pred. S 41; P-V 3/1 II II 1/8; V 10+15=25. The species of this genus have a downward-pointing spine at the posterior margin of the preoperculum, which is covered with skin. The species are distinguished by the differences in the sensory papillae. Eleotris acanthopomus has 5 transverse rows of papillae below the eyes. The 2nd and 4th transverse rows extend downwards beyond the longitudinal row below them, but the 3rd and 5th do not. Two longitudinal rows on the operculum do not touch at the posterior ends. Inhabits mainly brackish water. Takes up life at the bottom before it reaches 2 cm SL. General distribution: Indo-West Pacific: Comoros, Seychelles; Indonesia east to Micronesia and French Polynesia, north to Ibaraki Prefecture (Japan), south to northern Australia and New Caledonia. Habitat: freshwater, brackish, marine. Distribution in Oman: Here, we report it for the first time in one locality (Wadi Hasik) located in the inland water body of Oman adjacent to the shore of the Arabian Sea (Fig. 31). Examined material: ZM-CBSU: S103-1, 2, Oman: Dhofar Governorate, Salalah, Wadi Hasik, at Hasik Village, 17°22’01.2”N, 55°16’58.8”E, H. R. Esmaeili, S.M. Al-Jufaili, A.H. Masoumi, 04 Jan. 2022., Published as part of Esmaeili, Hamid Reza, Jufaili, Saud Al, Masoumi, Amir Hassan & Zarei, Fatah, 2022, Ichthyodiversity in southeastern Arabian Peninsula: Annotated checklist taxonomy, short description and distribution of Inland fishes of Oman, pp. 451-503 in Zootaxa 5134 (4) on pages 477-478, DOI: 10.11646/zootaxa.5134.4.1, http://zenodo.org/record/6541567, {"references":["Bleeker, P. (1853) Diagnostische beschrijvingen van nieuwe of weinig bekende vischsoorten van Sumatra. Tiental V-X. Natuurkundig Tijdschrift voor Nederlandsch Indie, 4 (2), 243 - 302."]}

Eleotris tecta Bussing, 1996. Largescaled Spotted Sleeper; Guavina, Vieja, Pez Perro, Dormil��n. Distribution: Global: Eastern Pacific Ocean; from southeastern Costa Rica to Colombia; entering estuaries and littoral lagoons and ascending river courses; Costa Rica: Tr and Co (Pacific), 0��� 75 m.a.s.l., Per, Dia. Occurrence and conservation status: Nat, DD. References: Bussing (1987: 247, as Eleotris sp.; 1998: 418; brief description, including illustrations and an identification key, information on distribution, with a map, and ecology; 1996: 252; detailed description, including illustrations, information on distribution and ecology) and Angulo et al. (2013: 1006; listed, including taxonomic information and distributional data)., Published as part of Angulo, Arturo, 2021, New records and range extensions to the Costa Rican freshwater fish fauna, with an updated checklist, pp. 1-72 in Zootaxa 5083 (1) on page 34, DOI: 10.11646/zootaxa.5083.1.1, http://zenodo.org/record/5800630

Eleotris perniger (Cope, 1871). Smallscaled Spinycheek Sleeper; Guavina, Pez Perro, Dormil��n, Guavina Espinosa. Distribution: Global: Western Atlantic Ocean; from Bermuda, Bahamas, South Carolina and northern Gulf of Mexico, USA, to southeastern Brazil; entering estuaries and littoral lagoons and ascending river courses; Costa Rica: To, Pa, Ma and Si (Atlantic), 0��� 60 m.a.s.l., Per, Dia. Occurrence and conservation status: Nat, LC. References: Bussing (1966: 237, as Eleotris pisonis (Gmelin 1789) ���missidentification; listed, information on distribution), Bussing (1987: 246; 1998: 417, as E. pisonis ���missidentification; brief description, including illustrations and an identification key, information on distribution, with a map, and ecology), Angulo et al. (2013: 1006, as E. pisonis ��� missidentification; listed, including taxonomic information and distributional data) and Robertson & Van Tassell (2019: 4097; detailed description, including illustrations, information on distribution, with a map, and ecology)., Published as part of Angulo, Arturo, 2021, New records and range extensions to the Costa Rican freshwater fish fauna, with an updated checklist, pp. 1-72 in Zootaxa 5083 (1) on page 34, DOI: 10.11646/zootaxa.5083.1.1, http://zenodo.org/record/5800630, {"references":["Robertson, D. R. & Van Tassell, J. (2019) Shorefishes of the Greater Caribbean: online information system. Version 2.0 Smithsonian Tropical Research Institute, Balboa, Panama. Available from: https: // biogeodb. stri. si. edu / caribbean / en / pages (accessed 27 August 2021)."]}

Eleotris tubularis Heller & Snodgrass, 1903. Cocos Sleeper; Guavina, Vieja, Pez Perro, Dormil��n, Dormil��n de la Isla del Coco. Distribution: Global: Eastern Pacific Ocean; Cocos Island; entering estuaries and ascending river courses; Costa Rica: IC (Pacific), 0��� 53 m.a.s.l., Per, Dia. Occurrence and conservation status: End, DD. References: Angulo et al. (2013: 1006; listed, including taxonomic information and distributional data)., Published as part of Angulo, Arturo, 2021, New records and range extensions to the Costa Rican freshwater fish fauna, with an updated checklist, pp. 1-72 in Zootaxa 5083 (1) on page 34, DOI: 10.11646/zootaxa.5083.1.1, http://zenodo.org/record/5800630

Eleotris picta Kner, 1863. Smallscaled Spotted Sleeper; Guavina, Vieja, Pez Perro, Dormil��n, Dormil��n Manchado. Distribution: Global: Eastern Pacific Ocean; from the mouth of the Gulf of California, Mexico, to northern Peru, as well as Cocos and the Galapagos Islands; entering estuaries and littoral lagoons and ascending river courses; Costa Rica: IC, Ni, Te, Be, Ba, Ta, Pi, Tr and Co (Pacific), 0��� 100 m.a.s.l., Per, Dia. Occurrence and conservation status: Nat, LC. References: Bussing (1966: 237; listed, information on distribution), Bussing (1987: 245; 1998: 416; brief description, including illustrations and an identification key, information on distribution, with a map, and ecology), Angulo et al. (2013: 1006; listed, including taxonomic information and distributional data) and Robertson & Allen (2015: 1975; detailed description, including illustrations, information on distribution, with a map, and ecology)., Published as part of Angulo, Arturo, 2021, New records and range extensions to the Costa Rican freshwater fish fauna, with an updated checklist, pp. 1-72 in Zootaxa 5083 (1) on page 34, DOI: 10.11646/zootaxa.5083.1.1, http://zenodo.org/record/5800630, {"references":["Robertson, D. R. & Allen, G. R. (2015) Shorefishes of the Tropical Eastern Pacific: online information system. Version 2.0. Smithsonian Tropical Research Institute, Balboa, Panama. Available from: https: // biogeodb. stri. si. edu / sftep / en / pages (accessed 27 August 2021)."]}

Eleotris amblyopsis (Cope, 1871). Largescaled Spinycheek Sleeper; Guavina, Pez Perro, Lucia, Dormil��n, Dormil��n Oscuro. Distribution: Global: Western Atlantic Ocean; from North Carolina, USA, to southeastern Brazil; entering estuaries and littoral lagoons and ascending river courses; Costa Rica: To, Pa, Ma and Si (Atlantic), 0��� 15 m.a.s.l., Per, Dia. Occurrence and conservation status: Nat, LC. References: Bussing (1966: 237; listed, information on distribution), Bussing (1987: 244; 1998: 413; brief description, including illustrations and an identification key, information on distribution, with a map, and ecology), Angulo et al. (2013: 1006; listed, including taxonomic information and distributional data) and Robertson & Van Tassell (2019: 4095; detailed description, including illustrations, information on distribution, with a map, and ecology)., Published as part of Angulo, Arturo, 2021, New records and range extensions to the Costa Rican freshwater fish fauna, with an updated checklist, pp. 1-72 in Zootaxa 5083 (1) on page 34, DOI: 10.11646/zootaxa.5083.1.1, http://zenodo.org/record/5800630, {"references":["Robertson, D. R. & Van Tassell, J. (2019) Shorefishes of the Greater Caribbean: online information system. Version 2.0 Smithsonian Tropical Research Institute, Balboa, Panama. Available from: https: // biogeodb. stri. si. edu / caribbean / en / pages (accessed 27 August 2021)."]}

The species of Eleotris from Indonesia are reviewed and compared to the known species described from the area. Nine species are recognized including three new species in the ‘melanosoma’ neuromast pattern group. These are described using genetic and morpho-meristic approaches. The new species differ by a high percentage of genetic divergence in partial COI gene (652 bp) and by several characters including the number of pectoral fin rays, the number of scales in lateral, predorsal, forward and zigzag series. The main characteristics of the other known species in the area in the ‘melanosoma’ group, Eleotris melanosoma Bleeker, 1853 and Eleotris macrolepis (Bleeker, 1875), both belonging to this group, are given for comparison. A key for Eleotris species from Indonesia is provided.

Eleotris picta Kner, 1863. Spotted Sleeper. To at least 54 cm (21.3 in) TL (John Snow, pers. comm. to M.L.). Isla de Cedros (Ram��rez-Valdez et al. 2015); southern tip of Baja California (Personal communication: Scripps Institution of Oceanography Fish Collection, La Jolla, California) to Peru (Bussing 1998), including Gulf of California and Islas Gal��pagos (Grove and Lavenberg 1997) and Isla del Cocos. Benthic; marine, brackish, and fresh waters (Bussing 1998); depth: 0���5 m (16 ft) (Robertson and Allen 2008)., Published as part of Love, Milton S., Bizzarro, Joseph J., Cornthwaite, Maria, Frable, Benjamin W. & Maslenikov, Katherine P., 2021, Checklist of marine and estuarine fishes from the Alaska-Yukon Border, Beaufort Sea, to Cabo San Lucas, Mexico, pp. 1-285 in Zootaxa 5053 (1) on page 203, DOI: 10.11646/zootaxa.5053.1.1, http://zenodo.org/record/5578008, {"references":["Ramirez-Valdez, A., Aburto-Oropeza, O., Palacios-Salgado, D. S., Reyes-Bonilla, H., Dominguez Guerro, I., Hinojosa Arango, G., Correa S., F., Villasenor-Derbez, J. C., Cota-Nieto, J. J. & Hernadez-Velasco, A. (2015) The nearshore fishes of the Cedros Archipelago (north-eastern Pacific) and their biogeographic affinities. CalCOFI Reports, 56, 143 - 167.","Bussing, W. A. (1998) Freshwater fishes of Costa Rica. Revista Biologia Tropical, 46 (Supplement 2).","Grove, J. S. & Lavenberg, R. J. (1997) The Fishes of the Galapagos Islands. Stanford University Press, Stanford.","Robertson, D. R. & Allen, G. R. (2008) Shorefishes of the Tropical Eastern Pacific: an Information System. Version 1.0 (2008). Smithsonian Tropical Research Institute, Balboa."]}

The larvae and/or juveniles of coastal species were found in the composition of oceanic ichthyoplankton sampled during the 43rd expedition of R/V “Akademik Vavilov” in the southern waters of the North Atlantic. These fish included insufficiently-studied taxonomic forms from five families: Myripristis jacobus (Holocentridae), Ctenogobius sp., Gobionellus oceanicus, Gobioides grahamae (Gobiidae), Eleotris sp. 1., Dorminator maculatus (Eleotridae), Spariosoma sp. 1 (Scaridae), and Pontinus nematophthalmus, (Scorpaenidae). The paper presents illustrated descriptions of these forms and discusses the problems of their identification.

International audience; Eleotris species (Teleostei: Eleotridae) are one of the most common fish in Indo‐Pacific estuaries and insular freshwater streams. In these rivers, they are a sit‐andwaitpredator. They have an amphidromous life cycle, that is adults grow, feed andreproduce in rivers, while larvae have a marine dispersal phase. Larvae recruit backto rivers and settle in stream habitats. Primary characters used to determine Eleotrisspecies are the presence and the disposition of cephalic sensory papillae rows on theoperculum and under the eyes as well as scale row numbers. The morphology ofthese cephalic sensory papillae is of particular importance in this predatory genusas it is generally correlated in fish to predation and feeding. In this paper, we haveestablished a molecular phylogeny of the genus based on the 12 mitochondrial protein‐coding genes to discuss the relationship between Indo‐Pacific Eleotris species.There is a well‐supported dichotomy in the molecular phylogeny, and this separationinto two main clades is also morphologically visible, as it reveals a difference in thearrangement of cephalic sensory papillae. Indeed, the phylogeny distinguishes thespecies with the “open” pattern of the operculum sensory papillae and the specieswith the “closed” one. This phylogeny thus reflects the morphology of the opercularpapillae. The evolution of this character is discussed in terms of the adaptation of theEleotris genus to life in tropical insular river systems.

The modern Gobioidei (Teleostei) comprise eight families, but the extinct †Pirskeniidae from the lower Oligocene of the Czech Republic indicate that further families may have existed in the past. However, the validity of the †Pirskeniidae has been questioned and its single genus †Pirskenius has been assigned to the extant family Eleotridae in previous works. The objective of this study is to clarify the status of the †Pirskeniidae. Whether or not the †Pirskeniidae should be synonymised with the Eleotridae is also interesting from a biogeographical point of view as Eleotridae is not present in Europe or the Mediterranean Sea today. We present new specimens and re-examine the material on which the two known species of †Pirskenius are based (†P. diatomaceus Obrhelova, 1961; †P. radoni Přikryl, 2014). To provide a context for phylogenetically informative characters related to the palatine and the branchiostegal rays, three early-branching gobioids (Rhyacichthys, Protogobius, Perccottus), an eleotrid (Eleotris) and a gobiid (Gobius) were subjected to micro-CT analysis. The new data justify revalidation of the family †Pirskeniidae, and a revised diagnosis is presented for both †Pirskenius and †Pirskeniidae. Moreover, we provide for the first time an attempt to relate a fossil gobioid to extant taxa based on phylogenetic analysis. The results indicate a sister-group relationship of †Pirskeniidae to the Thalasseleotrididae + Gobiidae + Oxudercidae clade. Considering the fossil record, the arrival of gobioids in freshwater habitats in the early Oligocene apparently had generated new lineages that finally were not successful and became extinct shortly after they had diverged. There is currently no evidence that the Eleotridae was present in the European ichthyofauna in the past.

The purpose of this study is to assess the state of contamination of fish in the So River by trace metal elements including Zinc, Lead, Cadmium, Copper and Arsenic. Water samples and four species of both sexes (Clarias anguillaris, Kribia kribensis, Tilapia guineensis and Eleotris vittata) were collected and analyzed. The pH, temperature and values of the chemical species present in the water of the So River characterize an ecosystem favorable to the growth of aquatic species. The Metallic Traces Elements (MTE) concentrations vary from one fish species to another and depend on the sex and age of the animal. Zinc and copper are more concentrated in males than females with the exception of copper in Tilapia. The Pb concentration is higher in young Kribia and Clarias as well as Zn and Cd in young Tilapia. The concentrations in Cd and Pb are well above the European standards and those in the Republic of Benin, worrying results that express a health toxicity risk related to the consumption of fish of the river So.

DNA barcoding has been proposed as a means of quick species identification using a short standardized segment of DNA. Two species (Eleotris fusca and Glossogobius giuris) from the family Gobiidae and Eleotridae were selected for DNA barcoding using samples collected from different regions of Bangladesh. Cytochrome Oxidase Subunit I (COI) gene was sequenced from two different gobi fishes and compared with two previously published similar sequences from the genera Eleotris and Glossogobius. Multiple sequence alignment and the molecular systematic study were performed. The DNA barcode technique identified the two species. The study provides a good example of how DNA barcoding can build upon its primary mission of species identification and use available data to integrate genetic variation investigated at the local scale into a global framework.Bangladesh J. Zool. 44(2): 175-184, 2016

International audience; All native fishes living in the Caribbean island rivers are considered diadromous but few species have been validated as diadromous. In Guadeloupe (Lesser Antilles) as well as in the other tropical islands, the riverine habitats are subject to strong anthropogenic pressure due to resource modifications or dams. The management of fish biodiversity requires knowledge concerning their life history traits and behaviour that are still unknown for most species at a local scale and at the whole distribution area of the species. In a Guadeloupe river, we inferred the migratory patterns of four freshwater fishes common to Caribbean rivers by the analysis of otolith microchemistry. We found two species Eleotris perniger (Eleotridae) and Sicydium plumieri (Gobiidae) to be completely amphidromous with a marine larval phase and a freshwater adult phase. Agonostomus monticola (Mugilidae) was also found to be amphidromous in this system. The fourth species Gobiesox cephalus (Gobiesocidae) showed elemental ratios suggesting an estuarine larval phase and was defined as “limited amphidromous”. The identification of such life history traits, with limited dispersion abilities, argues for specific management measures in tropical island rivers at a basin scale for the conservation of biodiversity.

International audience; The study of the ichthyofaunal corpus yielded by the archaeological site of Teouma, Efate Island, Vanuatu, has revealed the unexpected presence of a significant number of bones of Eleotridae (Sleepers) on the site, as early as 2920-2870 cal. B.P. Out of the 8560 identified fish remains associated with the Lapita layers, which document the period of initial settlement of the archipelago, 1368 have been determined as belonging to eleotrids, including species of the genera Giuris, Ophiocara and Eleotris. They represent 16% of the corpus and occupy second place among the dominant families in an assemblage composed otherwise of a wide-range of marine coastal and reef-associated taxa. Even though the Lapita economy is characterised by an intensive and broad-spectrum exploitation of all terrestrial and marine resources available and readily procurable, the eleotrids of Teouma are the first clear evidence thus far of the exploitation of freshwater environments by Lapita communities anywhere in their range. A river and a swamp are present in the vicinity of the site, and hooks and lines and/or multi-pronged spears could have been used. Passive gear such as weirs, fish-traps or nets might have been applied as well, enabling the capture of sleepers in larger quantities. The results presented here offer an original insight of an unknown facet of Lapita subsistence strategies and aim to highlight the antiquity of freshwater fishing at a regional scale.

Eleotris fusca (Bloch & Schneider [ex Forster] 1801)—Dusky sleeper Status at New Ireland. New record, based on WAM material (WAM P.28185-018, 1 specimen, Kavieng District). Distribution and habitat. New Ireland: 2.— General distribution: East Africa and Mascarenes east to Gambier and Marquesas islands, north to Ryukyu Islands, south to New Caledonia and Rapa. Found in lower reaches of freshwater streams including estuaries, usually on mud bottom, 0–5 m depth. Freshwater, transitional water and marine., Published as part of Andréfouët, Serge, Chen, Wei-Jen, Kinch, Jeff, Mana, Ralph, Russell, Barry C., Tully, Dean & White, William T., 2019, Checklist of the marine and estuarine fishes of New Ireland Province, Papua New Guinea, western Pacific Ocean, with 810 new records, pp. 1-360 in Zootaxa 4588 (1) on page 268, DOI: 10.11646/zootaxa.4588.1.1, http://zenodo.org/record/2988163

International audience; A new species of Eleotris, a freshwater eleotrid, is described fromstreams of the Solomon Islands using both genetic analysis based on the mitochondrialCOI gene and morpho-meristic study. The new species is separatedfrom E. acanthopoma, E. melanosoma, and E. fusca with a mean pairwise divergenceof 14%, 11%, and 9.9%, respectively. It shares with E. fusca, its sister species, thesame combination of cephalic free neuromast patterns (i.e., second, fourth, andsixth suborbital free neuromast rows on cheek extending ventrally past horizontalrow d (2.4.6 pattern) and row os connecting with row oi at ventroposteriormargin of opercle, but it differs by a combination of characters includingscales in lateral series 42 – 46 versus 53 – 67, transverse back series 11 – 13 versus13 – 21, and zigzag series 9 – 11 versus 12 – 17.

Information on length-weight relationship and condition of landed fish catch at Elechi Creek is inadequate despite different human activities taking place there. Fish specimens were procured twice monthly between April and September 2012 from artisanal fishers and middlemen at three landing sites (stations) in study area. Lengths and weights of fish were determined to nearest centimeter and gram using standard methods. Fulton’s condition factor was estimated following Bagenal and Tesh method to determine health status of fish. One thousand specimens comprising of 15 species from 15 families were examined. Tilapia guineensis (Cichlidae) (150, 15%) recorded highest number while Microchirus boscanion (Oleidae) accounted for lowest number (23, 2.3%). Sizes of fishes included small-sized (5.3 cm to 7.6 cm) to large-sized fishes (23.8 cm to 29.4 cm). Considering stations, the highest number of fishes was recorded in Station 3 (438 specimens) while the lowest was in Station 1 (257 specimens). Chrysichthys nigrodigitatus (b=3.75), Mugil cephalus (b=3.02) and Atherina formis (b=3.46) exhibited positive allometry growth while Pseudotolithus elongatus (b=2.55), Eleotris africana (b=2.79), Sardinella maderemsis (b=2.04), Periophthalmus barbarous (b=2.77), Microchirus poscanion had negative allometry growth. Five species of fish had condition factor below 1 which signified that Elechi Creek was not conducive for their growth.Keywords: Fish catch, growth pattern, wellbeing, anthropogenic inputs, species

Most West African lagoons are very productive ecosystems that support important fishery activities. However, increases in human populations put heavy pressure on their resources. This raised the importance of sustainable management tools for these ecosystems. Length-Weight Relationships (LWRs) which is an important fish stock assessment tool was investigated in the Aby lagoon, southeastern Cote d'Ivoire. Fishes were caught monthly from February 2012 through March 2013 using gillnets. Fishes captured were identified, weighted to the nearest gram and standard length was measured to the nearest millimeter. The 30 fish species selected for this study belong to 18 families. The highest species number (n = 7) was recorded for Cichlidae family. All length-weight regressions were significant with a coefficient of determination (r²) varying from 0.462 (Parailia pellucida) to 0.984 (Elops lacerta). Growth coefficient, b of the LWR ranged from 2.229 (P. pellucida) to 3.811 (Eleotris vittata). Nineteen species exhibited negative allometric growth pattern while 11 had positive allometric growth. These results are useful references for West African coastal lagoon management and particularly for that of the Aby lagoon system.

This account of the riverine ichthyofaunas from the islands of Buton and Kabaena, off south-eastern mainland Sulawesi, represents the first detailed quantitative checklist and ecological study of the riverine fish faunas in the biological hotspot of Wallacea. The results are based on analysis of samples collected by electrofishing at a wide range of sites from July to September in both 2001 and 2002. While the fauna was diverse, with the 2179 fishes caught comprising 64 species representing 43 genera and 22 families, the catches were dominated by the Gobiidae (26 species and 25% by numbers), Eleotridae (seven species and 27% by numbers), Zenarchopteridae (three species and 22% by numbers) and Anguillidae (two species and 12% by numbers). The most abundant species were the eleotrids Eleotris aff. fusca-melanosoma and Ophieleotris aff. aporos, the anguillid Anguilla celebesensis, the zenarchopterids Nomorhamphus sp. and Nomorhamphus ebrardtii and the gobiids Sicyopterus sp. and Glossogobius aff. celebius-kokius. The introduced catfish Clarias batrachus was moderately abundant at a few sites. Cluster analysis, allied with the similarity profiles routine SIMPROF, identified seven discrete groups, which represented samples from sites entirely or predominantly in either Buton (five clusters) or Kabaena (two clusters). Species composition was related to geographical location, distance from river mouth, per cent contribution of sand and silt, altitude and water temperature. The samples from the two islands contained only one species definitively endemic to Sulawesi, i.e. N. ebrardtii and another presumably so, i.e. Nomorhamphus sp., contrasting starkly with the 57 species that are endemic to Sulawesi and, most notably, its large central and deep lake systems on the mainland. This accounts for the ichthyofaunas of these two islands, as well as those of rivers in northern mainland Sulawesi and Flores, being more similar to each other than to those of the central mainland lake systems. This implies that the major adaptive radiation of freshwater fishes in Sulawesi occurred in those lacustrine environments rather than in rivers.

Eleotris amblyopsis: LSUMZ 15635, 2, Honduras, Departamento de Cort'es, Barra del Motagua, community of Omoa, 8 September 2011; UF 67681, 28 (1 CS), Costa Rica, Lim'on Province, Benjamin Creek 1 mi upstream Tortuguero River, 17 August 1969., Published as part of Stephen J. Walsh & Prosanta Chakrabarty, 2016, A New Genus and Species of Blind Sleeper (Teleostei: Eleotridae) from Oaxaca, Mexico: First Obligate Cave Gobiiform in the Western Hemisphere, pp. 506-517 in Copeia 104 (2) on page 515, DOI: 10.1643/CI-15-275, http://zenodo.org/record/269586

Eleotris perniger: LSUMZ 14540, 8, Honduras, Departamento de Atla'ntida, Cureo River mouth, Refugio de Vida Silvestre, 9 January 2011; UF 27603, 34 (2 CS), Panama, Kuna Yala Province, creek 0.5 mi N of Puerto Obaldia, 4 May 1965., Published as part of Stephen J. Walsh & Prosanta Chakrabarty, 2016, A New Genus and Species of Blind Sleeper (Teleostei: Eleotridae) from Oaxaca, Mexico: First Obligate Cave Gobiiform in the Western Hemisphere, pp. 506-517 in Copeia 104 (2) on page 515, DOI: 10.1643/CI-15-275, http://zenodo.org/record/269586

The morphology of Eleotris acanthopoma collected from Moorea in French Polynesia is described. This is the first record of this species from French Polynesia, greatly expanding the known range, which was previously only considered to extend from southern Japan to New Caledonia. Nucleotide sequences of the mitochondrial ND5 gene of several Eleotris species and related genera indicate that E. acanthopoma from Moorea belongs to the same lineage as E. acanthopoma from Japan and the Philippines. Despite being separated by a distance of approximately 10,000 km, two of the specimens from Moorea and one from the Philippines had identical nucleotide sequences. Results of this study indicate that extensive dispersal occurs during the pelagic larval stage of this species.

Fishes of the genus Eleotris present highly conserved morphology, which may make their recognition difficult. Here, two cryptic Eleotris lineages from five locations along the coast of Brazil were identified using the COI gene and two nuclear fragments. High bootstrap and posteriori values supported those lineages, and the genetic distance of COI varied from 6% between the two lineages to 14.1% from other western Atlantic Eleotris species, such as E. pisonis, E. amblyopsis and E. perniger. The reciprocal monophyly for both types of markers, the divergences between those lineages and the other Eleotris species from the Brazilian coast may, in fact, represent two new cryptic species. The cryptic lineages and currently recognized species were collected in distinct environments, reinforcing the need for further sampling to understand the real distribution of each taxon.

Recruitment courses of three amphidromous sleeper species, Eleotris acanthopoma, E. melanosoma, and E. fusca, were investigated at the surf zone adjacent to the river mouth and at five stations in the Teima River on Okinawa Island, Japan. All three species occurred at the surf zone as pelagic larvae with transparent and compressed body, a conspicuous air bladder, and an emarginated caudal fin. Eleotris fusca (16.0–19.6 mm in standard length: SL) sometimes possessed a vestige of the larval chin barbel and were larger than E. acanthopoma (9.7–13.2 mm SL) and E. melanosoma (11.2–12.8 mm SL). The pelagic larvae were also collected during full tide from the lower reaches of the tidally influenced area of the river. The pelagic larvae may be carried in and out of the estuary with some tidal fluxes, and they may settle when they reach the upper tidally influenced area where the salinity becomes extremely low. Body width and pigmentation of newly settled larvae increased. E. fusca was considered to migrate upstream to the freshwater area against the flow of the river just after reaching the settled stage. After settlement, all three species became completely pigmented, the caudal fin became round in shape, and the fin ray counts became complete with growth. Also, E. acanthopoma dispersed widely to the lower part of the tidally influenced area or to the lower reaches of the freshwater area, E. melanosoma dispersed to the lower part of the tidally influenced area, and E. fusca dispersed upstream.

The instream distributions and feeding habits of two species of sleeper, Eleotris acanthopoma and E. fusca, were studied in the Teima River on Okinawa Island, southern Japan. Both adult fishes inhabited the river, but their distribution patterns were found to be different. The distribution of E. acanthopoma was from the tidally influenced area to the lower part of the freshwater area, whereas E. fusca was distributed almost entirely in the freshwater area. They were found to coexist at the upper limit of the tidally influenced area and the lower part of the freshwater area. Their feeding habits were clearly different, although both species were carnivorous. Eleotris acanthopoma fed mainly on crabs in the tidally influenced area and on aquatic snails in the freshwater area, where they coexist with E. fusca. In contrast, E. fusca fed mainly on shrimps in the freshwater area. Their coexistence may result from the difference in their feeding habits.

Gambusia hubbsi populations occur in a variety of fresh and brackish-water habitats on Andros, Bahamas. These include shallow water sites (tidal creeks, lakes, roadside ditches), and blueholes (vertical solution caves). In some blueholes G. hubbsi is the only species present, in others it co-occurs with other species, principal among these is a predator, Eleotris pisonis. By contrast to blueholes, shallow water sites have highly variable temperature and depth. In addition, they are frequented by avian piscivores and may be occasionally occupied by piscivores such as Eleotris. We sampled 10 shallow water sites, 14 blueholes where Eleotris is absent and 12 blueholes where Eleotris co-occurs with G. hubbsi. We measured and compared variation in female body size, fecundity, and reproductive investment among these three habitats. The observed patterns of life history variation are only partially in accord with expectations from theory regarding the effects of predation and seasonality on life history variation. Samples from populations that colonized a series of man-made trenches (Well Fields), a set of introductions into that habitat, and changes in life history traits of lab-raised females from three blueholes, suggest that the observed pattern of life history variation in other habitats also reflects differences in food availability among habitats, and imperfectly reflects the potential phenotypic variability of this species.

This report describes a method for the determination of species identity of newly hatched larvae of five sympatric Hawaiian amphidromous gobioids (Lentipes concolor, Sicyopterus stimpsoni, Awaous guamensis, Stenogobius hawaiiensis, and Eleotris sandwichensis). Polymerase chain reaction (PCR) was used to amplify a homologous section of the cytochrome b (Cyt b) region of the mitochondrial genome (mtDNA) from adults of all five species. The resulting PCR-amplified DNA was subjected to restriction fragment length polymorphism (RFLP) analysis producing species-specific restriction patterns. PCR products from the five species were sequenced to substantiate correct amplification, restriction site locations, and fragment sizes. The sequence data were also used to construct a phylogenetic tree. Individual, newly hatched, wild-caught larvae of amphidromous gobioids of unknown species affinity were sorted into six morphotypes based on physical characteristics. These typed larvae and those from two species that spawned in captivity were subjected to the same molecular analysis as the adults. The RFLP results from adults and larvae were compared, allowing larval morphotypes to be assigned to the appropriate species. These comparisons permitted construction of an identification key to the newly hatched larvae of these species based solely on physical characteristics for use in future field studies.Key Words: fish larvae, species identification, Hawaii, gobioidea, PCR, RFLP.http://link.springer-ny.com/link/service/journals/10126/bibs/1n2p167.html

The population structure, abundance, reproductive status, and feeding interrelationships of eleotrid fishes from two freshwater streams of the Caribbean coast of Costa Rica were investigated over 10 continuous months. Eleotris amblyopsis was abundant in both streams. Dormitator maculatus, Eleotris pisonis, and Gobiomorus dormitor were present in both streams but common only in the larger stream that contained dense growth of floating aquatic macrophytes. Dormitator maculatus is a detritivore and overlaps with the other three eleotrids, all of which had diets dominated by shrimp and fishes. Intraguild predation and cannibalism was documented with E. amblyopsis as the prey. Except for the benthic G. dormitor, eleotrids were associated with dense mats of floating macrophytes in the large stream, and leaf peaks in the small stream. Diet similarity among the three carnivorous eleotrids declined during the wet seasons, the period when their prey disperse at lower per-unit-area densities within the flooded forests that surround the streams. Analysis of population size distributions and gonadal maturation indicated that at least some reproduction occurs on a nearly year-round basis within these eleotrid populations. The spring dry period may be associated with migration of ripe eleotrids to estuarine habitats for spawning. Juvenile Eleotris are the dominant fishes in the ‘tismiche’, mass migrations of juvenile shrimp and fish larvae and juveniles that enter and ascend the estuary, especially during the summer wet season.

The sleeper genus Eleotris Bloch and Schneider, 1801 (Teleostei: Gobioidei) is defined and five species recognized in tropical West African waters: E. vittata Dumeril, 1858, E. senegalensis Steindachner, 1870, E. feai Thys van den Audenaerde and Tortonese, 1974, E. daganensis Steindachner, 1870, and E. annobonensis Blanc, Cadenat and Stauch, 1968. These are defined by patterns of neuromast organs (sensory papillae) in comparison with counts of scales in lateral series. The systematic and phylogenetic position of the West African species is discussed in the light of a survey of type material representing New World and Indo-Pacific species. It is concluded that the West African species may represent at least three lines of evolution within the genus, and the possibility of dispersal across the Atlantic is discussed.

The bait preference of basket traps fishing operation and heavy metal contamination in the trap catches from Lagos Lagoon were carried out between January and June 2011. Sixty baskets traps were used for the fishing operation, twenty basket traps were baited each with soap, coconut and maize. Clibanarius africanus was the most abundant shell fish numerically (1607, 86.77%) while Eleotris vittata was the most abundant among the fin fish (52, 2.81%). The least abundant species during the study was Lutjanus goorensis (1, 0.05%). The soap-baited basket traps were the most efficient in the catches while the coconut was the least effective bait. The analysis of variance showed that there was no significant difference (P>0.05) in the number of individual organisms and species caught by each bait. Heavy metals detected in the catches included Zinc, Iron and Lead while Chromium and Cadmium which were below detectable limits. The study showed that Clibanarius africanus had the highest content of Zinc in the soap-baited basket traps (35.45) while Callinectes amnicola had the highest content in the coconut (28.27) and maize chaff (14.14. The traps lasted all through the sampling period without any form of deformity. Keywords: Bait, trap, heavy metal, catch per unit

Summary The fish assemblage of the lower Bonny river of the Niger delta with its adjoining creeks was studied. Local fishing gear was used in the collection of samples, which yielded 25 families made up of 57 species. Of these 25 families, some were residents of the main river (Cynoglossus senegalensis, Arius heudoloti, Pentane-mus quinquarius and Trichurus lepturus) whilst others were creek residents (e.g. Tilapia guineensis, Sarotherodon melanotheron, Citharichthys stamfii and Eleotris vittata). Higher catches were made in the dry season than in the wet season for most of the gear types employed in both the creek and the main river channel. A comparison between the creek and the main channel fish (using Sorenson's index; 0–34) suggests that the creek assemblage is separate from that of the main river channel. Resume On a etudie la population piscicole du bas de la riviere Bonny, dans le delta du Niger et dans les criques voisines. On a utilise le materiel de peche local pour recolter des echantillons. Ceux-ci ont reuni 57 especes appartenant a 25 families. Sur ces 25 families, on a observe que certaines etaient residentes de la riviere principale (Cynoglossus senegalensis, Arius heudoloti, Pentanemus quinquarius et Trichurus lepturus) alors que les autres sont des residents de la critique (e.a Tilapia guinensis, Sarotherodon melanotheron, Citharichthys stamfii et Eleotris vittata). Les prises effectuees en saison seche etaient plus importantes qu'en saison des pluies pour la plupart des types d'equipement utilises, que ce soit dans les criques ou dans le lit principal de la riviere. La comparaison des poissons de la crique avec ceux du lit principal (en utilisant l'index de Sorensen: 0,34) laisse entendre que la population piscicole de la crique est isolee de celle du lit principal de la riviere.

264. Eleotris fasciatus Chen, 1964:45, fig. 4 Holotype: unknown (female, 61.5), Lan���yu (Botel Tobago), Aug. 1960. Pparatype: unknown, (male, 64.2), collected with the holotype. Remark. Neither institute has the specimen deposited nor was a catalog number provided in the original descriprion. They are most likely in NTUM but may be lost., Published as part of Ho, Hsuan-Ching & Shao, Kwang-Tsao, 2011, 2957, pp. 1-74 in Zootaxa 2957 on page 55, {"references":["Chen, T. - R. (1964) A review of gobies found in the waters of Taiwan (Formosa) and adjacent seas (I). Quarterly Journal of the Taiwan Museum, 17, 37 - 59."]}

Eleotris annob��nensis Blanc, Cadenat & Stauch, 1968 Fairly common, along with E. vittata, in lowermost reaches of most streams sampled by the CAS expeditions. Frank Pezold identified these specimens, which he considers distinct from E. vittatus. S��o Tom��: CAS 214387 (1 specimen, Agua Azeitona); CAS 214400 (20 specimens, Agua Micond��); CAS 214404 (2 specimens, Rio Provache); CAS 214405 (24 specimens, small tidal stream into Praia Mutamba); CAS 214406 (2 specimens, Rio Lemb��); CAS 214408 (2 specimens, small tidal stream into Praia Mutamba); CAS 214409 (6 specimens, Rio Contador); CAS 214414 (19 specimens, Rio Lemb��); CAS 214417 (27 specimens, Rio Anambo). Pr��ncipe: CAS 214390 (11 specimens, Agua Maria Correia); CAS 214402 (38 specimens, Agua Maria Correia); CAS 214399 (16 specimens, creek into Praia Rei)., Published as part of Peter Wirtz, Carlos Eduardo L. Ferreira, Sergio R. Floeter, Ronald Fricke, Joao Luiz Gasparini, Tomio Iwamoto, Luiz Rocha, Claudio L. S. Sampaio & Ulrich K. Schliewen, 2007, Coastal Fishes of Sao Tome and Principe islands, Gulf of Guinea (Eastern Atlantic Ocean) - an update., pp. 1-48 in Zootaxa 1523 on page 21

New material from inshore waters of Ghana has permitted redescription of Eleotris maltzani Steindachner 1882, for which Batanga angustifrons Blanc, Cadenat & Stauch, 1968, is found to be a junior synonym. Aspects of die skeleton, head lateral-line system, pelvic fins and odier external features justify recognition of a new genus, Wheelerigobius, for this small species. Despite virtually separate pelvic fins, Wh. maltzani is shown by osteological and lateral-line criteria to belong within the Gobiinae, rather man Eleotrinae. Despite some marked autapomorphy in pattern of suborbital sensory papillae, Wh. maltzani most closely resembles die Mediterranean-Atlantic genus Gobius, although affinity with the neighbouring Millerigobius is also discussed.

The shore fishes of St. Helena Island, South Atlantic Ocean (15°58′S 5°43′W), are reviewed. A checklist of 81 species of shore fish with notes on the ecology and geographical distribution of each species is presented. Sixteen of the species have not before been recorded at St. Helena and seven other species have previously been identified incorrectly. Two new species, Chromis sanctaehelenae Edwards (Pomacentridae) and Quisquilius ascensionis Dawson and Edwards (Gobiidae), are described and the pomacentrid Stegastes sanctaehelenae (Sauvage) is redescribed and a neotype designated. In addition, hitherto unreported records of the cephalochordate Epigonichthys lucayanus, and of an Eleotris species (Eleotrididae) found in a freshwater pool near the coast, are included. The ecology and zoogeography of the shore fishes is discussed. 34·2% of the shore fishes are widespread amphi-Atlantic warm-water species. 15·2% are western Atlantic species which have the central Atlantic islands as their eastern limit, whilst ...

In order to examine distribution characteristics of freshwater fish in Jeju-do, freshwater fish were examined at 17 stations including three reservoirs, 13 stations in six streams, and one estuary wetland. A total of 396 fish individuals of seven species in four families were collected at the three reservoir stations and Lepomis macrochirus, an introduced species that disturbs the ecosystem, was the dominant species (71.7%). There were 770 fish individuals of 22 species in 15 families collected from the six streams. The dominant species was Chaenogobius urotaenius (22.6%). A total of 26 fish of four species in three families were found at the Hadori wetland and the dominant species was Tridentiger obscurus. There were five species of fish found for the first time in Jeju-do during this study; Micropterus salmoides, Eleotris sp., Tridentiger brevispinis, Redigobius bikolanus, and Scatophagus argus. In particular, Eleotris sp. of Eleotridae had not so far been recorded in Korea.