Cod is an important sources of food. Cod-liver oil is very rich in vitamins A and D and other things that people need to stay healthy. There are about 21 genera and 55 species of codfishes.
Cod live in the cold waters of the northern Atlantic and Pacific oceans, and the North Sea in Europe. They are gray-green fish with speckles and a white line on their sides. Atlantic cod may also be reddish in color. Pacific cod is smaller than their Atlantic relatives.
Barbel, a thin tentacle that hangs from the cod’s lower jaw, is an unusual physical feature of the cod. Scientists think this organ may be a tool for finding food.
In fact, cod may grow to be 1.8 meters long and more than 90 kilograms in weight.