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This paper is the third part of the "Ichthyofauna of the Fresh and Brackish Waters of Russia and Adjacent Areas: Annotated List with Taxonomic Comments," which we started in 2022, based on a critical analysis of scientific publications of the last 200 years, and on the data of the authors' research. This current paper includes all currently known fishes of 8 orders from Siluriformes to Syngnathiformes of Russia and adjacent waters, represented by 18 families, 43 genera and 159 species. [ABSTRACT FROM AUTHOR]

This paper is the second part of the "Ichthyofauna of the Fresh and Brackish Waters of Russia and Adjacent Areas: Annotated List with Taxonomic Comments", which we started in 2022 based on a critical analysis of scientific publications of the last 200 years, and on the data of the author's research. The current paper includes all currently known fishes of the order Cypriniformes of Russia and adjacent waters, represented by three suborders Catostomoidei, Cobitoidei and Cyprinoidei, comprising ten families, 64 genera and 177 species. The most specious families were the Leuciscidae (59 species/33.3% of all species), Gobionidae (35/19.8%) and Xenocyprididae (23/13.0%), which together represent just over 66% the total cypriniform species. Fourteen of the studied species (24.7% of all cyprinids in Russia) are introduced species, 21 species (11.9%) are endemic; 32 species (18.1%) are recorded from Russia for the first time. In relation to the habitat, 131 species live and breed exclusively in fresh waters, 31 species are of freshwater origin, but can also tolerate slightly brackish waters, ten species are represented by anadromous forms (all with residential populations), and three species are amphidromic, capable of live and reproduce both in brackish water and in freshwater. According to the IUCN criteria, the majority of fish are classified as Least Concern (135 species/76.3%), but two species, Cobitis taurica and Gobio tauricus, are Critically Endangered. [ABSTRACT FROM AUTHOR]

A complete annotated list of fresh and brackish waters ichthyofauna of the Russian Federation and adjacent areas, based on a critical analysis of scientific publications of the last 200 years, and on the data of the authors' research, is the aim of this study. The taxonomic composition of the freshwater and brackish water fish fauna of Russia remains insufficiently studied. This may result incorrect data on the true number of fish species of this category, not only for the waters of Russia, but also in the modern system of the world ichthyofauna as a whole, and also does not give a complete idea of the range, degree of endemism, abundance, conservation status, commercial value, and others important aspects. Until the present study, according to various sources, the Russian freshwater and brackish water ichthyofauna was estimated to amount from 351 to 486 species, respectively. However, based on our ongoing research, these numbers are too low and need to be revised. The total species number in all categories should include at least 800 species also including the introduced non-native species, as well as species not yet recorded from Russian waters, but suggested to be found in the future. In this first part of our updated checklist, we provide a basic historical review of ichthyological research in Russia, together with the first 77 species belonging to three classes (Petromyzonti, Elasmobranchii and Actinopteri), ten orders (Petromyzontiformes, Lamniformes, Carcharhiniformes, Squaliformes, Rajiformes, Myliobatiformes, Acipenseriformes, Elopiformes, Anguilliformes and Clupeiformes), nineteen families (Petromyzontidae, Alopiidae, Lamnidae, Triakidae, Carcharhinidae, Sphyrnidae, Somniosidae, Squalidae, Rajidae, Arhynchobatidae, Dasyatidae, Acipenseridae, Polyodontidae, Megalopidae, Anguillidae, Muraenesocidae, Clupeidae, Engraulidae and Pristigasteridae) and 38 genera. For each species, the following details are presented: scientific and English common names, taxonomic position with comments and synonyms (if necessary), conservation status, world distribution, zoogeographic characteristics, distribution in Russian waters and adjacent areas, abundance, and commercial value. [ABSTRACT FROM AUTHOR]

The fifth part of the review represents the last part of the annotated list of fish species found in the marine (within a 200-mile zone), brackish, and fresh waters of Sakhalin: 84 species from one order Perciformes, one suborder Cottoidei, two families Cyclopteridae and Liparidae, and 13 genera. The review also represents general ecological characteristics of the ichthyofauna of Sakhalin, as well as a final essay. [ABSTRACT FROM AUTHOR]

The fourth part of the report represents the next part of the annotated list of fish species found in the marine (within a 200-mile zone), brackish, and fresh waters of Sakhalin: 113 species from one order, three suborders, 9 families, and 53 genera. [ABSTRACT FROM AUTHOR]

The third part of the report represents the annotated list of fish species found in the marine (within a 200-mile zone), brackish, and fresh waters of Sakhalin: 145 species from 2 orders, 22 families, and 61 genera. [ABSTRACT FROM AUTHOR]

The second part of the report represents the annotated list of fish species found in the marine (within a 200-mile zone), brackish, and fresh waters of Sakhalin: 139 species from 22 orders, 54 families, and 105 genera. [ABSTRACT FROM AUTHOR]

A complete annotated list of marine, brackish-water, and freshwater ichthyofauna of Sakhalin Island and the adjacent southern part of the Sea of ​​Okhotsk is provided for the first time in the entire history of the study of the fish population. It is based on a critical analysis of the literature data for the last 200 years, collection materials, and the results of our own long-term studies. The list includes 600 species in 4 classes, 44 orders, 17 suborders, 129 families, 50 subfamilies, and 312 genera. It presents both English and Latin (scientific) names, information on the ranges in the World Ocean and distribution within Sakhalin waters, and data on the conservation status, commercial importance, and abundance. For a number of species, the list also provides information on collection specimens, confirming their presence within the studied water area. For all species, the current ranges and taxonomic status are specified according to the new data, if any. The so-called controversial taxa are discussed. The first part provides brief information about the history of the study of the Sakhalin ichthyofauna, the geographical and oceanological characteristics of the study area, as well as the first 118 species of the annotated list belonging to 79 genera, 42 families and 20 orders in 4 classes. [ABSTRACT FROM AUTHOR]

Abstract: The second, final part of the work contains a continuation of the annotated list of fish species found in the marine and brackish waters of Aniva Bay (southern part of the Sea of Okhotsk, southern part of Sakhalin Island): 137 species belonging to three orders (Perciformes, Pleuronectiformes, Tetraodontiformes), 31 family, and 124 genera. The general characteristics of ichthyofauna and a review of the commercial fishery of the bay fish, as well as the final systematic essay, are presented. [ABSTRACT FROM AUTHOR]

Abstract: Based on a critical analysis of literature data for the past 200 years and the results of our own multiyear studies, an annotated list of marine, brackish-water, and anadromous (migratory) fish found in Aniva Bay (southern part of the Sea of Okhotsk, southern part of Sakhalin Island) is given: 274 species (against 164 previously mentioned) in three classes, 22 orders, 67 families, 161 genera. For a number of species, information is provided on collection specimens that confirm their presence within the studied water area. For each species, Latin and English names, taxonomic remarks, information on conservation status, ecology, abundance and commercial importance are given. The first part provides brief information about the history of the study and geographical and climatic-oceanographic characteristics of the bay as well as the first 137 species of the annotated list, represented by 83 genera, 35 families, and 19 orders. [ABSTRACT FROM AUTHOR]

An annotated list of cartilaginous fish (Chondrichthyes: Elasmobranchii, Holocephali) is given for the first time in the 200-year history of studying the ichthyofauna of Sakhalin Island and adjacent waters of the southern part of the Sea of Okhotsk (including the coast of Hokkaido Island) and the northern Sea of Japan. The list includes 43 species in two classes, eight orders, 16 families, and 25 genera. Information on nature conservation status, English and Latin names, depths of habitat, and distribution within the coastal waters of Sakhalin are presented. For a number of species caught off the coast of Sakhalin and in the adjacent waters, information is provided on collection specimens confirming their presence in the region under study. For a number of species of the Rajiformes order (Arctoraja parmifera, A. smirnovi, A. simoterus), the modern ranges and taxonomic status are being refined in the light of new data. The taxonomic status of the so-called “disputed” taxa is discussed as well as the validity of the species considered in the Bathyraja matsubarai complex. Based on the study of the collections, Arctoraja simoterus, previously unknown in the waters of Russia, as well as Myliobatis tobijei, caught in the Bering Sea, has been discovered, which significantly expands the range of this species to the north. [ABSTRACT FROM AUTHOR]

The final part of the work provides the completion of the annotated taxonomic list of fish species found in freshwater and coastal brackish waters of Sakhalin Island, which includes 46 species belonging to 25 genera, nine families (Pholidae, Trichodontidae, Ammodytidae, Odontobutidae, Gobiidae, Paralichthyidae, Pleuronectidae, Monacanthidae, Tetraodontidae), and three orders (Perciformes, Pleuronectiformes, Tetraodontiformes). The comments on the ichthyofauna of fresh and brackish waters of Sakhalin are provided. [ABSTRACT FROM AUTHOR]

The third part of the work provides a continuation of the annotated list of fish species found in freshwater and coastal brackish waters of Sakhalin Island: 60 species belonging to 42 genera, 21 families (Gadidae, Lotidae, Scomberesocidae, Belonidae, Hemiramphidae, Hypoptychidae, Gasterosteidae, Syngnathidae, Sebastidae, Hexagrammidae, Cottidae, Hemitripteridae, Agonidae, Liparidae, Percichthyidae, Lateolabracidae, Carangidae, Mugilidae, Zoarcidae, Stichaeidae, Cryptacanthodidae) and six orders (Gadiformes, Beloniformes, Gasterosteiformes, Syngnathiformes, Scorpaeniformes, Perciformes). [ABSTRACT FROM AUTHOR]

The second part of the work is a continuation of the annotated list of fish species found in fresh-water and coastal brackish waters of Sakhalin Island: 58 species belonging to five orders (Cypriniformes, Siluriformes, Esociformes, Osmeriformes, Salmoniformes), nine families (Cyprinidae, Cobitidae, Nemacheilidae, Bagridae, Siluridae, Esocidae, Osmeridae, Salangidae, Salmonidae) and 37 genera. [ABSTRACT FROM AUTHOR]

Based on a critical analysis of Russian and foreign publications for the last 200 years and on the results of the authors' research, a complete annotated list of both typical freshwater ichthyofauna of Sakhalin Island, with the inclusion of the species occurring in lagoons of the island, and marine species that can be found in brackish and freshened coastal waters is presented for the first time. The list includes 175 species in three classes, 18 orders, 44 families, 19 subfamilies, and 114 genera. For each type, taxonomic comments are given, synonymy and conservation status, distribution within the island and rangewide, abundance and commercial value are clarified. Latin and English names are given. As is also a complete bibliography on the first descriptions and synonyms are provided. The first part presents the basic information about the history of the study, geographical and climatic-oceanographic characteristics of Sakhalin Island, and the first 11 species of the annotated list. [ABSTRACT FROM AUTHOR]