PURPOSE: To provide a process for recovering, finely divided fish meat protein floating in washing waste water of ground fish meat production process or finely divided fish meat protein floating in boiled and aged liquid of fish meat without using any coagulant and other additives and to provide a process for utilizing the recovered fish meat protein.

CONSTITUTION: Finely divided fish meat protein is recovered from the washing waste water of ground fish meat production process or from the boiled and aged liquid of fish meat without using any coagulant or other additives by using a potential flotation apparatus. The fish meat protein recovered by the above method is used as a raw material for ground fish meat or fish meal.