Fish
40 entries in the Fish compendium.
AgnathaJawless fish: a paraphyletic group including hagfish, lampreys, and extinct forms like conodonts.AnglerfishRay-finned fish using a modified fin ray as a lure.BarracudaLarge, predatory, ray-finned, saltwater fish of the genus Sphyraena.CharaciformesOrder of ray-finned fish including piranhas and tetras.ChondrichthyesCartilaginous fish with skeletons of cartilage, not bone.CoelacanthCoelacanths are an ancient lineage of lobe-finned fish belonging to the class Actinistia. As members of the…CypriniformesAn order of ray-finned fish including carps, minnows, and loaches, diverse in Asia but absent from Australia…GalaxiidaeSmall freshwater fish of the Southern Hemisphere, many amphidromous.GrouperGroupers are large, predatory fish known for their protogynous hermaphroditism.HaddockA commercially vital North Atlantic gadoid with a distinctive black blotch.HagfishJawless fish that produce slime and lack a vertebral column.LungfishClosest living relatives of tetrapods with air-breathing lungs.Mahi-mahiA fast-growing, colorful surface-dwelling fish found worldwide.Mullet (fish)Ray-finned fish family with historical food importance worldwide.AcanthodiiExtinct jawed fishes, the 'spiny sharks' that were stem-cartilaginous fish.ActinopterygiiRay-finned fish dominate aquatic ecosystems and vertebrate diversity.Alaska pollockA key North Pacific fish, second only to Peruvian anchoveta in global catch.ArapaimaLarge air-breathing freshwater fish of South America.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.CichlidDiverse fish family known for rapid evolution and parental care.Coral reef fishDiverse, colorful fish adapted to complex coral reef ecosystems.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.European seabassA commercially important temperate bass native to European and African coasts.FlatfishRay-finned fish with both eyes on one side of the head.Flying fishSaltwater fish that glide above the ocean surface.GillRespiratory organ for aquatic gas exchange.GobioideiSuborder of ray-finned fish, mostly small benthic gobies.GoldfishA popular aquarium fish native to China, selectively bred for over a thousand years.GuppySmall livebearing fish native to South America, widely introduced worldwide.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.MilkfishSole living species of the ancient family Chanidae.Northern pikeA carnivorous freshwater fish of the Northern Hemisphere.
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