Perciformes families

thumb|right|Scorpaena scrofa

The Percidae are a family of ray-finned fish, part of the order Perciformes, which are found in fresh and brackish waters of the Northern Hemisphere. The majority are Nearctic, but there are also Palearctic species. The family contains nearly 250 species in 12 genera. The perches and their relatives are in this family; well-known species include the walleye, sauger, ruffe, and three species of perch. However, small fish known as darters are also a part of this family.

thumb|A Spiny red gurnard swimming and also using its "foreleg" spines

Anarhichadidae, the wolffishes, sea wolves or wolf eels, is a family of marine ray finned fishes belonging to the order Perciformes. These are predatory, eel shaped fishes which are native to the cold waters of the Arctic, North Pacific and North Atlantic Oceans.

The Cottidae are a family of fish in the superfamily Cottoidea, the sculpins. Following major taxonomic revisions, it contains about 118 species in 18 genera, the vast majority of which are either restricted to freshwater habitats or are amphidromous. They are referred to simply as cottids to avoid confusion with sculpins of other families.

The Platycephalidae are a family of marine ray-finned fish, most commonly referred to as flatheads. They are relatives of the lionfish, and belong to the order Perciformes.

Agonidae is a family of small, bottom-dwelling, cold-water marine fish. Common names for members of this family include poachers, Irish lords, sea ravens, alligatorfishes, starsnouts, hooknoses, and rockheads. They are notable for having elongated bodies covered by scales modified into bony plates, and for using their large pectoral fins to move in short bursts. The family includes about 59 species in some 25 genera, some of which are quite widespread.

In some scientific literature, the term "cod icefish" is used to identify members of this family. This should not be confused with the term "icefish," which refers to the "white-blooded" fishes of the family Channichthyidae. See Icefish (disambiguation).

thumb|right|Okhotsk atka mackerel (Pleurogrammus azonus)

Psychrolutidae (commonly known as marine sculpins, flathead sculpins, blobfishes, or tadpole sculpins) is a family of sculpins found in cool temperate waters throughout the Northern Hemisphere, with a few species ranging into cold and deep waters of the Southern Hemisphere. The vast majority are found in marine habitats, but a few range into freshwater habitats. The family reaches its greatest diversity in the North Pacific Ocean, but a few species are found as far south as Antarctica. The family contains over 216 recognized species in 63 genera. Their name is derived from the Greek psychrolou

Anoplopomatidae, the sablefishes, are a small family of ray-finned fishes classified within the order Perciformes. These fishes are found in the North Pacific Ocean.

Synanceiidae, the stonefishes, are a family of ray-finned fish in the order Perciformes, found in the Indo-Pacific region. They are close relatives of the scorpionfishes, with both placed in the suborder Scorpaenoidei. Many members of this family, most famously the subfamily Synanceiinae, are venomous. A majority of species in this family are marine, but some such as Notesthes robusta inhabit freshwater habitats.

REDIRECTCongiopodus

Trichodontidae, the sandfishes, is a small family of ray-finned fishes from the order Perciformes. The species in this family are found in the North Pacific Ocean.

Bembridae, the deep-water flatheads, are a family of bottom-dwelling ray-finned fishes. They are found in the Indian and western Pacific Oceans.

Neosebastidae, the gurnard scorpionfishes or gurnard perches, is a small family of deep-sea ray-finned fishes. It is part of the suborder Scorpaenoidei within the order Perciformes. These fishes are found in the Indian and Pacific oceans. Several of the species in this family are venomous.

REDIRECT Korean sandlance

Aulorhynchidae, the tube-snouts, is a small family of marine ray-finned fishes belonging to the suborder Gasterosteoidei in the order Perciformes. These fishes are found in the northern Pacific Ocean.

Harpagiferidae, the plunderfishes, are a family of marine perciform fishes native to the Southern Ocean.

Rhamphocottidae is a family of ray-finned fishes belonging to the superfamily Cottoidea, the sculpins. The species in this family occur in the North Pacific Ocean.

Bembropidae is a family of marine ray-finned fishes in the order Perciformes, native to the Atlantic, Indian, and Pacific Oceans.