King of herrings King snake eel King soldierbream King threadfin King weakfish Kingklip King-of-the-salmon Kinmei dragonet Kinneret bleak Kirk's blenny Kissing gourami Kissing loach Kissing prochilodus Kitefin shark Kitsunedai Kitsune-mebaru Kiwi hatchetfish Kiyi Kiyo’s dragonet Klamath Lake sculpin Klamath largescale sucker Klamath river lamprey Klausewitz' garden eel Klein's sole Klunzinger's mullet Klunzinger's wrasse Kner's goby Knife razorfish Knife-back seabream Knifejaw Knife-snouted pipefish Knifetooth dogfish Knipowitsch's tadpole Knobbed porgy Knobchin goby Knobfin sculpin Knobsnout parrotfish Knothead parrotfish Knout goby Knysna sandgoby Knysna seahorse Koaro Kobayashi's bristlemouth Kobe flounder Kobudai Koefoed's searsid Koefoed's smooth-head Koester Kohaku Koi Koheru