4-Letter Fish

A large, herbivorous freshwater fish of the minnow and carp family, native to eastern Asia and widely introduced elsewhere for aquatic weed control; often referred to as the grass carp or white amur.

Any of various edible, spiny-finned freshwater or marine fishes of the families Serranidae and Centrarchidae, widely distributed in North America and Europe.

A small, active freshwater fish of the cyprinid family, native to Africa and Asia and widely popular in home aquariums.

A South American freshwater fish (Leporinus obtusidens) belonging to the family Anostomidae, native to the Paraná and Uruguay river basins and highly regarded as both a game and food fish.

Any of several species of cold-water fish in the genus Salvelinus, belonging to the salmon family and typically found in deep alpine lakes and Arctic waters.

A large, heavily built freshwater fish of the family Cyprinidae, native to Europe and Asia but widely introduced globally, sometimes becoming an invasive species.

A thick-bodied European freshwater fish of the carp family (Squalius cephalus), noted for its large head, dark-edged scales, and preference for slow-flowing rivers.

Any of several deep-bodied marine fishes of the family Zeidae, especially the John Dory, which is prized as a commercial food fish.

Any of various similar small freshwater fishes of the minnow family found in North America.

A genus of predatory freshwater fish in the family Esocidae, native to the Northern Hemisphere, which includes the pikes, pickerels, and muskellunge, characterized by an elongated body, flat snout, and sharp teeth.

A small, predominantly marine fish belonging to the family Gobiidae, typically characterized by pelvic fins that are fused to form a disc-shaped sucker, commonly found inhabiting shallow coastal waters, estuaries, and coral reefs globally.

A genus of freshwater fish in the carp family, commonly known as western chubs, which are native to river systems in western North America.

A commercially important marine fish of the cod family (Merlucciidae), possessing an elongated body and native to cold or temperate oceanic waters globally.

A commercially important, deep-water marine fish belonging to the hake family, native to the oceans around New Zealand and southern Australia, characterized by a long, tapering body and widely harvested for its mild-tasting, flaky white flesh.

An elongated, commercially valuable marine fish of the cod family, native to the deep waters of the North Atlantic Ocean.

A commercially important surface-dwelling fish (Coryphaena hippurus) found in offshore temperate, tropical, and subtropical waters worldwide, widely known as the dolphinfish or mahi-mahi; also refers to its meat used as seafood.

A large, heavily built, and distinctively flattened marine fish of the genus Mola (particularly Mola mola), native to temperate and tropical oceans worldwide, commonly known as the ocean sunfish.

A European freshwater fish of the carp family (Chondrostoma nasus), notable for its prominent, protruding upper snout and its habit of scraping algae from submerged rocks.

A large, brightly colored, deep-bodied pelagic marine fish of the genus Lampris, notable for being the first known fully warm-blooded fish.

A large, predatory freshwater fish characterized by a long body and a pointed, toothy snout, widely distributed across North America and Eurasia.

Any of several stout-bodied marine or freshwater bottom-dwelling fishes, such as the eelpout, ocean pout, or horned pout.

Any of several species of omnivorous freshwater fish in the subfamily Serrasalminae, native to South American rivers and characterized by their distinctive, remarkably human-like square teeth adapted for crushing nuts, seeds, and plant matter.

A European and middle Asian freshwater fish belonging to the carp family, characterized by its deep, brownish-green body and distinctive bright red or orange fins.

A large, economically important species of freshwater carp (Labeo rohita) native to river systems in South Asia, widely cultivated in aquaculture and highly valued as a food fish.

A type of edible marine flatfish belonging to the family Soleidae, typically possessing a flat, oval body with both eyes on one side.

A small, laterally compressed fish of the family Scatophagidae, native to Indo-Pacific estuaries and occasionally kept in aquariums.

A herring-like marine fish (family Clupeidae, primarily genus Alosa) found along the coasts of North America and Europe, known for migrating up freshwater rivers to spawn and highly valued for its flesh and roe.

A large, fast-swimming marine fish of the mackerel family (tribe Thunnini), found in temperate and tropical oceans worldwide and commercially important for food.

Any of various marine surgeonfishes of the family Acanthuridae, primarily found in tropical coral reefs and noted for a scalpel-like spine at the base of the tail.

A large, laterally compressed freshwater cichlid fish native to the Amazon River basin in South America, known for its distinctive dark, wedge-shaped lateral spot as an adult and its popularity in the specialized aquarium trade.

A large predatory species of catfish (Silurus glanis) native to the river basins of central, southern, and eastern Europe, characterized by a scaleless body, a broad flat head, and long barbels.