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List of freshwater fish of Japan

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List of freshwater fish of Japan

This list of freshwater fish recorded in Japan is primarily based on the IUCN Red List, which, for fish found in inland waters, details the conservation status of some two hundred and sixty-one species, seventy-three of them endemic.[1] Of these, one is assessed as extinct in the wild (the endemic Black kokanee), seven as critically endangered (the Sakhalin sturgeon, Chinese sturgeon, Sakhalin taimen, and endemic Tango stripe spined loach, Kissing loach, Cave goby, and Urauchi-isohaze), twenty as endangered, twelve as vulnerable, ten as near threatened, one hundred and seventy-nine as of least concern, and thirty-two as data deficient.[1] This total includes species such as the Immaculate puffer, which, according to the IUCN Red List, may be characterized as a "marine species which occurs in estuaries...but is not dependent on these systems".[2]

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The Black kokanee or Kunimasu, once thought to be extinct, is now classed as extinct in the wild

According to statistics accompanying the 2020 Japanese Ministry of the Environment (MoE) Red List, and the 2014 Red Data Book, approximately four hundred species and subspecies of freshwater fish and brackish water fish are to be found, but the conservation status of only two hundred and forty-five is detailed.[3][4][5] Of these, three taxa are extinct from a domestic perspective (the Green sturgeon, Short ninespine stickleback, and endemic Suwa gudgeon), one extinct in the wild (the endemic Black kokanee), seventy-one critically endangered, fifty-four endangered, forty-four vulnerable, thirty-five near threatened, and thirty-seven data deficient.[3][4] As of January 2021, for their protection, ten species and subspecies have been designated National Endangered Species by Cabinet Order in accordance with the 1992 Act on Conservation of Endangered Species of Wild Fauna and Flora.[6]

A 2017 study, drawing on the 2013 edition of Fishes of Japan (日本産魚類検索), edited by Nakabo Tetsuji [ja], and the 2001 edition of Freshwater Fishes of Japan (日本の淡水魚), edited by Kawanabe Hiroya [ja], and including only those that "largely spend their lives in freshwater or diadromous fishes that reproduce in freshwater", but excluding those of the Ryūkyū Islands, lists some one hundred and eighty-one taxa, thirty-one of which, though they may have an established Japanese name and be written about at some length, are yet to be formally described, and as yet have no scientific binomial or trinomial.[7] As for the inland water fishes of the Ryūkyūs, a 2014 checklist detailed some 678 species, in 110 families, and 27 orders, but of these, 334 are primarily marine species "but accidentally migrate to inland waters", with a further 229 estuarine species (143 residential, 86 peripheral), 59 species being fluvial, and 56 diadromous.[8] In addition, it is noted that most of the fluvial species on Okinawa Island are alien.[8] A 1998 study, drawing on earlier editions of the above works by Nakabo and Kawanabe, lists 211 taxa nationwide, in 35 families, and 15 orders, comprising 134 fluvial and lacustrine fishes (63%) and 77 diadromous fishes (37%), including 88 endemics (41%) and 23 exotics (11%).[9]

As of the 7 July 2021 update, Eschmeyer's Catalog of Fishes returns three hundred and forty species records for freshwater fishes of Japan, excluding synonyms unless valid as a subspecies, and four hundred and thirty-two brackish water fishes, one hundred and ninety-two records representing those found in both systems, one hundred and fifty-six of which are also found in marine environments.[10]

Other than the lampreys with which the list begins, which are jawless fish, all orders are within the clade Actinopterygii, ray-finned fishes.

Order: Petromyzontiformes

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Far Eastern brook lamprey

Order: Acipenseriformes

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Chinese sturgeon

Order: Anguilliformes

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Japanese eel

Order: Atheriniformes

Order: Aulopiformes

Order: Beloniformes

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Japanese rice fish

Order: Callionymiformes

Order: Clupeiformes

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Japanese grenadier anchovy

Order: Cypriniformes

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Kissing loach

Order: Cyprinodontiformes

Order: Elopiformes

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Indo-Pacific tarpon

Order: Gasterosteiformes

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Three-spined stickleback

Order: Gonorynchiformes

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Milkfish

Order: Mugiliformes

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Squaretail mullet

Order: Osmeriformes

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Ayu sweetfish

Order: Perciformes

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Japanese perch

Order: Pleuronectiformes

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Starry flounder

Order: Salmoniformes

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Sakhalin taimen

Order: Scorpaeniformes

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Roughskin sculpin

Order: Siluriformes

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Amur catfish

Order: Synbranchiformes

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Asian swamp eel

Order: Syngnathiformes

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Reticulated freshwater pipefish

Order: Tetraodontiformes

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White-spotted puffer

Japanese names

Incorporating new species described and other taxonomic changes since the 2013 third edition of Fishes of Japan (日本産魚類検索), edited by Nakabo Tetsuji [ja], Motomura Hiroyuki (本村浩之) of the Kagoshima University Museum published in 2020 List of Japan's All Fish Species (日本産魚類全種目録), subtitled "Current standard Japanese and scientific names of all fish species recorded from Japanese waters"; regular open access updates are published, that of July 2021 detailing some 4,611 species.[12][13]

See also

References

External links

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