Kingdom Animalia Phylum Chordata Rank Order | Scientific name Gadiformes Higher classification Actinopterygii | |
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Mass Atlantic cod: 53 kg, Pollock: 18 kg, Alaska pollock: 770 g, Merluccius merluccius: 8.2 kg Lower classifications Gadidae, Grenadiers, Merlucciidae, Moridae, Lotidae | ||
Gadiformes are an order of ray-finned fish, also called the Anacanthini, that includes the cod and its allies. Many major food fish are in this order. They are found in marine waters throughout the world and the vast majority of the species are found in temperate or colder regions (tropical species are typically deep-water). A few species may enter estuaries but only one, the burbot (Lota lota), is a freshwater fish.
Common characteristics include the positioning of the pelvic fins (if present), below or in front of the pectoral fins. Gadiformes are physoclists, which means their gas bladders do not have a pneumatic duct. The fins are spineless. Gadiform fish range in size from the codlets, which may be as small as 7 cm (2.8 in) in adult length, to the Atlantic cod, Gadus morhua, which reaches up to 2 m (6.6 ft).
