Fish
40 entries in the Fish compendium.
AcanthodiiExtinct jawed fishes representing a paraphyletic grade, including stem-chondrichthyans andActinopterygiiRay-finned fish dominate aquatic ecosystems and vertebrate diversity.AgnathaJawless vertebrates, both living and extinct, from the Cambrian onward.Alaska pollockA key North Pacific fish, second only to Peruvian anchoveta in global catch.AnglerfishRay-finned fish using a modified fin ray as a lure.ArapaimaLarge air-breathing freshwater fish of South America.BarracudaLarge, predatory, ray-finned, saltwater fish of the genus Sphyraena.BichirArchaic ray-finned fishes with lungs and dorsal finlets.CarpFreshwater fish of the family Cyprinidae, valued and invasive worldwide.CatfishDiverse ray-finned fish known for barbels and lack of scales.CharaciformesOrder of ray-finned fish including piranhas and tetras.ChondrichthyesCartilaginous fish with skeletons of cartilage, not bone.CichlidDiverse fish family known for rapid evolution and parental care.CoelacanthCoelacanths are an ancient lineage of lobe-finned fish belonging to the class Actinistia. Coral reef fishDiverse, colorful fish adapted to complex coral reef ecosystems.CypriniformesOrder of ray-finned fish including carps, minnows, and loaches.CyprinodontiformesAn order of small, mostly freshwater fish including killifish and live-bearers.Deep-sea fishFish adapted to the dark, high-pressure depths of the ocean.Electric eelNeotropical freshwater fish that generate powerful electric shocks.Electric rayCartilaginous fish that stun prey with electric discharges.FlatfishRay-finned fish with both eyes on one side of the head.Flying fishSaltwater fish that glide above the ocean surface.GalaxiidaeSmall freshwater fish of the Southern Hemisphere, many amphidromous.GobioideiSuborder of ray-finned fish, mostly small benthic gobies.GoldfishA domesticated carp selectively bred for color over a millennium.European seabassA commercially important temperate bass native to European and African coasts.GillRespiratory organ for aquatic gas exchange.GrouperGroupers are large, predatory fish known for their protogynous hermaphroditism.GuppySmall livebearing fish native to South America, widely introduced worldwide.HaddockA commercially vital North Atlantic gadoid with a distinctive black blotch.HagfishJawless fish that produce slime and lack a vertebral column.HerringForage fish forming large schools, vital to fisheries science and history.IlishAn anadromous fish vital to South Asian cuisine and economy.KoiOrnamental carp bred from Amur carp in Japan.LampreyJawless fish with a sucking mouth, found in temperate waters.LungfishClosest living relatives of tetrapods with air-breathing lungs.Mahi-mahiA fast-growing, colorful surface-dwelling fish found worldwide.MilkfishSole living species of the ancient family Chanidae.Mullet (fish)Ray-finned fish family with historical food importance worldwide.Northern pikeA carnivorous freshwater fish of the Northern Hemisphere.
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