Fish meal, or fishmeal, is a commercial product made from fish and
the bones and offal from processed fish. It is a brown powder or
cake obtained by drying the fish or fish trimmings, often after
cooking, and then grinding it.
If it is a fatty fish it is also pressed to extract most of the
fish oil.
Fishmeal is a nutrient-rich and high protein supplement feed
ingredient that stores well, and is used primarily in diets for
domestic animals and sometimes as a high-quality organic
fertilizer.