Gadidae

There are several species of kosher cod and several species of non-kosher cod, so the status of Blue Ling is not immediately clear. Most commercial cod species are in the Gadidae family and several are kosher, such as cod, haddock, pollock, and whiting. Non-kosher cods are also in the Gadidae family and include the Burbot and the Lawyer, also called Freshwater Ling (Lota Lota). However, Blue Ling is in the less familiar Lotidae family. There are detailed lists online of kosher and non-kosher fish, and Blue Ling is not listed.

The scientific name of the Atlantic cod is Gadus morhua. It belongs to the Kingdom Animalia, Phylum Chordata, Class Actinopterygii, Order Gadiformes, Family Gadidae.

The poor cod, Trisopterus minutus, is a temperate marine fish belonging to the cod family (Gadidae). It is red brown in color and has a pronounced chin barbel. It may grow up to a length of 40cm. It is usually found in small shoals at depths between 10 and 300 meters on muddy or sandy bottoms. Its distribution spans the eastern Atlantic; from Norwegian coasts to Portugal and along the Atlantic coast of Morocco; also in the Mediterranean. Spawning takes place towards the end of winter. It feeds on crustaceans and small fishes. They are eaten by seals, whales and dolphins. It is commercially harvested for the production of fish meal, and in southern Europe as food