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Kathetostoma fluviatilis

Not Evaluated freshwater

Banded stonelifter

Kathetostoma laeve

Not Evaluated saltwater

Blackbanded stargazer

Kathetostoma nigrofasciatum

Not Evaluated saltwater

Common false moray

Kaupichthys hyoproroides

Not Evaluated saltwater

Deep-bodied pipefish

Kaupus costatus

Not Evaluated saltwater

Cardinal goby

Kelloggella cardinalis

Not Evaluated saltwater

Hwang-Jul-yug-gak-bok

Kentrocapros flavofasciatus

Not Evaluated saltwater

Bass Strait pipefish

Kimblaeus bassensis

Not Evaluated saltwater

Balloch's rainbowfish

Kiunga ballochi

Not Evaluated freshwater

安氏克奈魚

Kneria ansorgii

Not Evaluated freshwater

Airbreathing shellear

Kneria auriculata

Not Evaluated freshwater

魯氏克奈魚

Kneria ruaha

Not Evaluated freshwater

Byblis Goby

Knipowitschia byblisia

Not Evaluated brackish

Corfu dwarf goby

Knipowitschia goerneri

Not Evaluated freshwater

Thessalogovinós

Knipowitschia thessala

Not Evaluated freshwater

查氏諾德脂鯉

Knodus chapadae

Not Evaluated freshwater

Knodus geryi

Not Evaluated freshwater

奇异诺德脂鲤

Knodus heteresthes

Not Evaluated freshwater

Golosa

Knodus meridae

Not Evaluated freshwater

奥特加诺德脂鲤

Knodus orteguasae

Not Evaluated freshwater

Knodus septentrionalis

Not Evaluated freshwater

史氏諾德脂鯉

Knodus smithi

Not Evaluated freshwater

Kisujitoragisu

Kochichthys flavofasciatus

Not Evaluated saltwater

Piaba

Kolpotocheirodon theloura

Not Evaluated freshwater

Deepwater clignfish

Kopua kuiteri

Not Evaluated saltwater

Bryan's sand dart

Kraemeria bryani

Not Evaluated saltwater

Rhombic lanternfish

Krefftichthys anderssoni

Not Evaluated saltwater

莱昂克列比塘鳢

Kribia leonensis

Not Evaluated freshwater

Krobia

Krobia guianensis

Not Evaluated freshwater

Heyland's suckermouth catfish

Kronichthys heylandi

Not Evaluated freshwater

Ai-haregaji

Krusensterniella maculata

Not Evaluated saltwater

Haregaji

Krusensterniella notabilis

Not Evaluated saltwater

Krusensterniella pavlovskii

Not Evaluated saltwater

尾緣溪鮰

Kryptolebias caudomarginatus

Not Evaluated freshwater

Mangrove rivulus

Kryptolebias marmoratus

Not Evaluated brackish

Kryptolebias sepia

Not Evaluated freshwater