Cods and Hakes (Gadiformes), derived etymologically from the Latin gadus which means cod. They are a group of fish that we will mostly find in cold waters of both the North Atlantic and the Mediterranean.
With a more or less elongated body, Cods and Hakes are characterized by having fins without spiny rays. The pelvic fins, in those species that have them, have 11 soft radii, and are inserted into the body of the animal in a plane lower or front to the plane of the pectoral fins. In general, both the dorsal and anal fins are long, and the caudal fin has both equal and symmetrical globules, that is to say homocerca.
Practically all the described species of Cods and Hakes, 613 species classified in 13 families and 84 genera, live in salt water. Only one species is known to live permanently in fresh water, and that is the case of Lota lota. Cods and Hakes constitute an order of fish with special importance at the level of commercial fishing. Approximately 25% of the species caught worldwide by commercial fisheries belong to this order. This is a direct consequence of the fact that they are highly valued species in the culinary world.
In terms of size within the Cods and Hakes, this ranges from a mere 7 cm to species that reach 2 meters in length, as is the case with Atlantic cod (Gadus morhua).