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FAMILY Eleotridae Belobranchus belobranchus (Valenciennes, 1837); Native; Throat-Spine Gudgeon; Found in rivers and watersheds across the Philippines; UWFC UW 007673; Kottelat 2013; LC Bunaka gyrinoides (Bleeker, 1853); Native; Greenback Gauvina; Found in rivers and watersheds across the Philippines; USNM 135902; Kottelat 2013; LC Eleotris acanthopoma Bleeker, 1853; Native; Spinecheek Gudgeon; Found in rivers and watersheds across the Philippines; ROM 53363; Kottelat 2013; LC Eleotris fusca (Forster, 1801); Native; Dusky Sleeper; Found in rivers and watersheds across the Philippines; CAS-SU 29832; Kottelat 2013, Corpuz et al. 2015; LC Eleotris melanosoma Bleeker, 1853; Native; Broadhead Sleeper; Found in rivers and watersheds across the Philippines; CAS-SU 26253-67; Kottelat 2013; LC Giuris laglaizei (Sauvage 1880); Native; Found in rivers and watersheds across the Philippines; MNHN A-1690; Kottelat 2013; LC Giuris margaritaceus (Valenciennes, 1837); Native; Snakehead Gudgeon; Found in rivers and watersheds across the Philippines; AMG I.23023-001, AMG I.21896-003; Kottelat 2013; LC Hypseleotris cyprinoides (Valenciennes, 1837); Native; Tropical Carp-Gudgeon; Found in rivers and watersheds across the Philippines; Kottelat 2013; DD Hypseleotris everetti (Boulenger, 1895); Endemic; Endemic to river basins of Palawan Island; BMNH 1894.6.30.172–177; Kottelat 2013; DD Hypseleotris pangel Herre, 1927; Endemic; Endemic to river basins of Southern Luzon Island; Kottelat 2013; DD Hypseleotris quisumbingi Roxas & Ablan, 1940; Endemic; Endemic to river basins of Northwestern Luzon Island; Kottelat 2013; NE, Published as part of Jamandre, Brian Wade, 2023, Freshwater fishes of the Philippines: a provisional checklist, pp. 151-181 in Zootaxa 5301 (2) on page 167, DOI: 10.11646/zootaxa.5301.2.1, http://zenodo.org/record/8030274, {"references":["Kottelat, M. (2013) The fishes of the inland waters of Southeast Asia: A catalogue and core bibliography of the fishes known to occur in freshwaters, mangroves and estuaries. Raffles Bulletin of Zoology, Supplement No. 27, 1 - 663.","Herre, A. W. C. T. (1927) The Philippine bureau of science monographic publications on fishes: gobies of the Philippines and China Sea. Monograph of the Bureau of Science Manila, 23, 1 - 352."]}

Chan, Jeffery C.F., Tsang, Alphonse H.F., Yau, Sze-man, Hui, Tommy C.H., Lau, Anthony, Tan, Heok Hui, Low, Bi Wei, Dudgeon, David, Liew, Jia Huan (2023): The non-native freshwater fishes of Hong Kong: diversity, distributions, and origins. Raffles Bulletin of Zoology 71: 128-168, DOI: 10.26107/RBZ-2023-0012

Objective. To identify and determine the infection parameters of the metacestodo Parvitaenia in different culture stages of chame Dormitator latifrons and to evaluate the histological damage caused by this parasite. Materials and methods. Forty-five specimens, 15 pre-breeding, 15 pre-fattening and 15 fattening, were examined to identify the parasite by conventional parasitology techniques; and the infection prevalence and average intensity parameters were calculated. Tissue damage was evaluated by fixing liver fragments and processed with the kerosene embedding technique. The difference between intensity per culture phase was evaluated by Kruskal-Wallis test. Total length, weight and Fulton's condition factor were correlated with intensity by linear correlation analysis. Results. A total of 29151 cestodes were found, identified as Parvitaenia cochlearii. The prevalence of the cestode was 100 % in all culture stages. The average intensity ranged from 22.4 to 1729.5 individuals and showed significant differences between culture phases (KW(2;42) = 36.34; p, Objetivo. Identificar y determinar los parámetros de infección del metacestodo Parvitaenia en diferentes fases de cultivo de chame Dormitator latifrons y evaluar los daños histológicos ocasionados por este parásito. Materiales y métodos. Se revisaron 45 ejemplares, 15 en fase de pre-cría, 15 en pre-engorda y 15 en engorda para identificar el parásito mediante técnicas de parasitología convencional; y se calcularon los parámetros de infección prevalencia e intensidad promedio. Los daños tisulares fueron evaluados fijando fragmentos de hígado y procesados con la técnica de inclusión en parafina. Se evaluó la diferencia entre la intensidad por fase de cultivo mediante la prueba de Kruskal-Wallis. La longitud total, peso y factor de condición de Fulton se correlacionó con la intensidad mediante un análisis de correlación lineal. Resultados. Se encontró un total de 29151 cestodos, identificados como Parvitaenia cochlearii. La prevalencia del cestodo fue de 100 % en todas las fases de cultivo. La intensidad promedio varió de 22,4 a 1729,5 individuos y mostró diferencias significativas entre fases de cultivo (KW(2;42) = 36,34; p

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

Adaptive radiations are generally thought to occur soon after a lineage invades a region offering high levels of ecological opportunity. However, few adaptive radiations beyond a handful of exceptional examples are known, so a comprehensive understanding of their dynamics is still lacking. Here, we present a novel case of an island species flock of freshwater fishes with a radically different tempo of adaptive history than that found in many popular evolutionary model systems. Using a phylogenomic data set combined with simultaneous Bayesian estimation of divergence times and trait-based speciation and extinction models, we show that the New Zealand Gobiomorphus gudgeons comprise a monophyletic assemblage, but surprisingly, the radiation did not fully occupy freshwater habitats and explosively speciate until more than 10 myr after the lineage invaded the islands. This shift in speciation rate was not accompanied by an acceleration in the rate of morphological evolution in the freshwater crown clade relative to the other species, but is correlated with a reduction in head pores and scales as well as an increase in egg size. Our results challenge the notion that clades always rapidly exploit ecological opportunities in the absence of competing lineages. Instead, we demonstrate that adaptive radiation can experience a slow start before undergoing accelerated diversification and that lineage and phenotypic diversification may be uncoupled in young radiations. [Adaptive radiation; Eleotridae; freshwater; Gobiomorphus; New Zealand.]

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."]}

Saccocoelioides is a genus of trematodes associated with fishes from the Americas. In the current research, morphologically distinct specimens of Saccocoelioides spp. were collected from six countries in Middle America. Specimens were sequenced using three molecular markers, the domains D1–D3 of the large subunit (LSU) from the nuclear rDNA, the cytochrome c oxidase subunit 1 (cox1) and nicotinamide adenine dinucleotide dehydrogenase subunit 1 (nad1) from mitochondrial DNA. A total of 74 new sequences were compared and aligned with other sequences available in GenBank. Maximum likelihood and Bayesian inference analyses were inferred from the LSU and cox1 datasets, revealing unequivocally that all the specimens correspond to S. lamothei. A haplotype network was built with 119 sequences of the nad1 gene. The network detected 57 distinct haplotypes divided into three haplogroups. To explore morphological differences among samples of S. lamothei, 17 morphological features were measured from 53 specimens from three fish families: Eleotridae, Mugilidae and Gobiidae. Principal component analysis yielded three main polygons that corresponded with each family analysed, suggesting host-induced phenotypic plasticity. The current evidence suggests that S. lamothei infects at least five fish families along the Pacific coasts of Mexico, Guatemala, El Salvador, Honduras, Nicaragua and Costa Rica.

The interaction between environmental factors and the distribution of gobiid fishes was investigated at 16 sampling sites in estuarine areas of the Mekong Delta, Vietnam. Fish specimens were mainly collected by using trawl net, push net, and bag net every two months, from August 2017 to August 2019. Data analysis showed that 40 fish species belong to three families in the gobiid assemblage in the studied area. The most common family was Gobiidae (62%), followed by Oxudercidae (25%) and Eleotridae (13%). The number of fish species decreased gradually from estuary to midstream of river systems. The gobiid assemblage was more diversified in the river system controlled by the West Sea (37 species and 696 individuals) than in the river planned by the East Sea (17 species and 225 individuals). The fish species and biodiversity indexes decreased with the reduction of salinity from the estuary to the midstream of the river system. In the wet season, the fish assemblage was more abundant and diverse than in the dry season due to the environmental factors influenced by the Mekong River. The highest biodiversity index was recorded in Bay Hap and Ong Trang (77.38%). Moreover, the analyzed result of biodiversity indexes revealed that the diversity of fish species in the study area was relatively high. The study outcome will be useful in fisheries management and biodiversity conservation, especially for estuaries.

New Zealand has a complex recent history of climatic and tectonic change that has left variable signatures in the geographic distribution and genetic structure of the region’s flora and fauna. To identify concordant patterns, a broad range of taxa must be examined and compared. In New Zealand’s North Island, a consensus is forming as to the dominant biogeographic barriers in the region although obligate freshwater taxa have not been considered in this framework. We use single-nucleotide polymorphisms to investigate phylogeography in the widespread obligate freshwater fish Gobiomorphus basalis on the North Island. Phylogeographic patterns within G. basalis reveal biogeographic disjunctions that are in some ways consistent and in other ways at odds with established patterns, providing insight into the processes that have shaped the islands’ biogeography. We also use phylogeography to delineate species boundaries within the entire New Zealand radiation of Gobiomorphus and find that it contains several morphologically cryptic species. We resolve two clades within G. basalis that correspond to areas north and south of the Taupo Volcanic Zone. We confirm the distinctiveness of Gobiomorphus alpinus relative to Gobiomorphus cotidianus, as well as the presence of two lineages within Gobiomorphus breviceps that were previously identified based on mitochondrial data.

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

Gobiomorus dormitor Lacep��de, 1800. Bigmouth Sleeper; Guavina del Atl��ntico, Boc��n, Guavina Boc��na, Guavina de Ley. Distribution: Global: Western Atlantic Ocean; from Bermuda and southern Florida, USA, to southeastern Brazil; entering estuaries and littoral lagoons and ascending river courses; Costa Rica: LN, RF, SJ, SC, Sa, To, Pa, Ma and Si (Atlantic), 0��� 60 m.a.s.l., Per, Dia. Occurrence and conservation status: Nat, LC. References: Bussing (1966: 237; listed, information on distribution), Bussing (1987: 249; 1998: 420; 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: 4100; 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 35, 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)."]}

11) Leptophilypnus panamensis (Meek & Hildebrand, 1916); Eleotridae. Pacific Freshwater Sleeper; Dormil��n de Agua Dulce (Fig. 4H). New record for the Barranca River basin; previous records of the species in Costa Rican freshwaters were restricted to the T��rcoles, Pirr��s, T��rraba and Coto River basins. Basis of the record: A single specimen was captured in the r��o Lagarto, Chomes, Puntarenas (10.08320, -84.92064), at 15 m. a.s.l., on September 1, 1979, by William Bussing et al (UCR 1268-018)., 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 15, DOI: 10.11646/zootaxa.5083.1.1, http://zenodo.org/record/5800630

Hemieleotris latifasciata (Meek & Hildebrand, 1912). Pygmy Sleeper; Guavinita, Guavina Enana. Distribution: Global: Eastern Pacific Ocean; from southern Mexico to Ecuador; entering estuaries and ascending river courses; Costa Rica: Ni, Te, Be, Ba, Ta, Pi, Tr and Co (Pacific), 5��� 100 m.a.s.l., Per, Dia. Occurrence and conservation status: Nat, LC. References: Bussing (1966: 237; listed, information on distribution), Bussing (1987: 252; 1998: 425; brief description, including illustrations and an identification key, information on distribution, with a map, and ecology) and Angulo et al. (2013: 1007; 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 35, DOI: 10.11646/zootaxa.5083.1.1, http://zenodo.org/record/5800630

Guavina micropus Ginsburg, 1953. Pacific Guavina; Guavina del Pac��fico. Distribution: Global: Eastern Pacific Ocean; from southern Nicaragua to Colombia; entering estuaries and ascending river courses; Costa Rica: Tr (Pacific), 0��� 2 m.a.s.l., Per, Dia. Occurrence and conservation status: Nat, DD. References: Angulo et al. (2013: 1007; listed, including taxonomic information and distributional data) and Robertson & Allen (2015: 2650; 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 35, 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)."]}

Family Eleotridae Bonaparte, 1835. Sleepers; Guavinas, Dormilones, Pocoyos. 7 G, 16 S., 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 33, DOI: 10.11646/zootaxa.5083.1.1, http://zenodo.org/record/5800630

Dormitator latifrons (Richardson, 1844). Pacific Fat Sleeper; Pocoyo, Guavina, Pez Perro, Guarasapa, Dormil��n, Pocoyo del Pac��fico, Dormil��n Chame, Dormil��n Porroco, El Puyeki. Distribution: Global: Eastern Pacific Ocean; from southern California, USA, to northern Peru; entering estuaries and littoral lagoons and ascending river courses; Costa Rica: Ni, Te, Be, Ba, Ta, Pi, Tr and Co (Pacific), 0��� 145 m.a.s.l., Per, Dia. Occurrence and conservation status: Nat, LC. References: Bussing (1966: 237; listed, information on distribution), Bussing (1987: 241; 1998: 410; 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: 1971; 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 33, 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 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)."]}

Gobiomorus polylepis Ginsburg, 1953. Finescale Sleeper; Guavina del Pac��fico, Boc��n, Guavina Boc��na, Dormil��n de Escamas Finas, Dormil��n Manchado. Distribution: Global: Eastern Pacific Ocean; from central Mexico to southern Costa Rica; entering estuaries and ascending river courses; Costa Rica: Ni and Pi (Pacific), 2��� 15 m.a.s.l., Per, Dia. Occurrence and conservation status: Nat, DD. References: Bussing (1987: 251; 1998: 424; brief description, including illustrations and an identification key, information on distribution, with a map, and ecology) and Angulo et al. (2013: 1007; 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 35, DOI: 10.11646/zootaxa.5083.1.1, http://zenodo.org/record/5800630

Erotelis armiger (Jordan & Richardson, 1895). Armiger���s Goby, Flathead Sleeper; Guavina Cabeza Plana, Gobio de Armiger. Distribution: Global: Eastern Pacific Ocean; from the lower Gulf of California, Mexico, to Colombia; entering estuaries and littoral lagoons and ascending river courses; Costa Rica: Pi (Pacific), 0��� 10 m.a.s.l., Per, Dia. Occurrence and conservation status: Nat, DD. References: Angulo et al. (2013: 1006; listed, including taxonomic information and distributional data) and Robertson &Allen (2015: 1977; 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 pages 34-35, 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 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)."]}

Guavina guavina (Valenciennes, 1837). Guavina; Guavina, Guavina Cabezona. Distribution: Global: Western Atlantic Ocean; from Florida, USA, to southeastern Brazil; entering estuaries and littoral lagoons and ascending river courses; Costa Rica: Si (Atlantic), 0��� 10 m.a.s.l., Per, Dia. Occurrence and conservation status: Nat, LC. References: Bussing (1966: 237; listed, information on distribution), Angulo et al. (2013: 1007; listed, including taxonomic information and distributional data) and Robertson & Van Tassell (2019: 4101; 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 35, 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)."]}

Leptophilypnus fluviatilis Meek & Hildebrand, 1916. Atlantic Freshwater Sleeper; Dormil��n de Agua Dulce. Distribution: Global: Western Atlantic and Eastern Pacific (Canal zone in Panama) Oceans; from Honduras to Panama; entering estuaries and littoral lagoons and ascending river courses; Costa Rica: To (Atlantic), 0��� 6 m.a.s.l., Per, Dia. Occurrence and conservation status: Nat, LC. References: Angulo et al. (2013: 1007; listed, including taxonomic information and distributional data) and Robertson & Van Tassell (2019: 4418; 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 36, 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)."]}

Dormitator maculatus (Bloch, 1792). Caribbean Fat Sleeper; Pocoyo, Guavina, Pez Perro, Guarasapa, Dormil��n, Pocoyo del Atl��ntico, Dormil��n Manchado, Guavina Mapo, La Naca. 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��� 12 m.a.s.l., Per, Dia. Occurrence and conservation status: Nat, LC. References: Bussing (1966: 237; listed, information on distribution), Bussing (1987: 242; 1998: 411; 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: 4094; 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 pages 33-34, 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)."]}

Gobiomorus maculatus (G��nther, 1859). Bigscale Sleeper, Pacific Sleeper; Guavina del Pac��fico, Boc��n, Guavina Boc��na, Dormil��n de Escamas Grandes, Dormil��n Manchado. Distribution: Global: Eastern Pacific Ocean; from Baja California and the mouth of the Gulf of California, Mexico, to northern Peru, as well as the Galapagos and Cocos Islands; entering estuaries and ascending river courses; Costa Rica: Ni, Te, Be, Ba, Ta, Pi, Tr and Co (Pacific), 0��� 145 m.a.s.l., Per, Dia. Occurrence and conservation status: Nat, LC. References: Bussing (1966: 237; listed, information on distribution), Bussing (1987: 250; 1998: 422; brief description, including illustrations and an identification key, information on distribution, with a map, and ecology), Angulo et al. (2013: 1007; listed, including taxonomic information and distributional data) and Robertson & Allen (2015: 1979; 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 35, 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)."]}

RESUMEN | Se realizó un trabajo experimental con juveniles de chame Dormitator latifrons con el objeto de evaluar la sustitución de harina de pescado en un alimento balanceado por harina de torta de sacha inchi (Plukenetia volubilis) y su efecto en el crecimiento y la supervivencia en cultivo intensivo. Un total de 360 organismos con peso promedio de 49,7 ± 4,42 g, fueron distribuidos al azar en doce tanques de geomembrana de 2 m de diámetro con 2000 L de agua/tanque, con una densidad de siembra de 15 chames/m3, durante 100 días. Se utilizaron cuatro dietas experimentales con 35% de proteína cruda: D1 (50% harina de sacha inchi-HSI y 50% harina de pescado-HP), D2 (75% HSI y 25% HP), D3 (100% HSI) y DC (100% HP), cada una con tres réplicas. Al final del estudio no hubo diferencias significativas tanto en las supervivencias (> 98,89%), como en incremento de peso de los peces entre los tratamientos dietéticos, pero con una elevada variabilidad de respuestas (6,9 - 14,2 g). Adicionalmente, las relaciones longitud total-peso total de las diferentes dietas no mostraron variaciones significativas, sugiriendo condiciones fisiológicas similares. Las tasas de crecimiento en el presente estudio son menores a las reportadas en investigaciones previas con piensos comerciales, dónde la densidad de siembra fue menor (hasta la mitad de la utilizada en el presente estudio). Los resultados muestran que, el uso de harina de sacha inchi es equiparable al uso de harina de pescado, lo cual sugiere la factibilidad del uso de sacha inchi como sustituto de harina de pescado en dietas balanceadas, aun en altas proporciones. ABSTRACT | An experimental study was carried out with juveniles of the Pacific fat sleeper Dormitator latifrons in order to evaluate the substitution of fishmeal in a dry feed for sacha inchi cake meal (Plukenetia volubilis) and its effect on growth and survival in intensive cultivation. A total of 360 organisms with an average weight of 49.7 ± 4.42 g were randomly distributed in twelve geomembrane tanks of 2 m in diameter with 2000 L of water/tank, with a sowing density of 15 fish/m3, during 100 days. Four experimental diets with 35% crude protein were used: D1 (50% sacha inchi meal-HSI and 50% fish meal-HP), D2 (75% HSI and 25% HP), D3 (100% HSI) and DC (100% HP), each with three replicates. At the end of the study, there were no significant differences both in survival (> 98,89%) and weight increases of fish among diet treatments, with a high variability of responses (6.9-14.2 g). Furthermore, the total length-weight relationships of the different diets did not show significant variations, suggesting similar physiological conditions. The growth rates in the present study were lower than those reported in previous investigations with commercial feed, where the stocking density was lower (up to half of the used in the present study). The results show that the use of sacha inchi flour is comparable to the use of fishmeal, which suggests the feasibility of using sacha inchi as a substitute for fishmeal in dry feeds, even in high proportions.