Only one cod . I think a tommy is a very small codling. A codling is a few pound . And a cod is a big fish double figures. There are differnt color cod u get the normal cod colour and red cod that are from kelp beds.
The colours differ between cod because of its surroundings the longer it feeds in one place the more it changes colour to it will blend in, the longer a fish feeds in the kelp beds they get darker and turn red to match the surroundings, even after being caught they'll still start to change colour put a dark or red fish in a white carrier bag and it'll soon start to get lighter in colour
Poor cod From Wikipedia
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.
