Fish species in which the main reserves of fat are in the liver, e.g. Cod (Gadus morhua). Fish with less than 2% fat in the flesh. Also referred to as lean fish which has other meanings. White fish, as the description of fish content in a product, means that the product may contain material from more than one white fish species. Not to be confused with the local or trivial name, whitefish, for the Japanese icefish (Salangichthys microdon, also called whitebait).