Operculumbones in a fish that provide facial support structure and a protective covering for the gills / From Wikipedia, the free encyclopedia In fish, an operculum is a structure made of bone that covers and protects the gills. A drawing showing the head of a perch, from the side. The different bones that make up the operculum are shown in color. This short article about biology can be made longer. You can help Wikipedia by adding to it.
In fish, an operculum is a structure made of bone that covers and protects the gills. A drawing showing the head of a perch, from the side. The different bones that make up the operculum are shown in color. This short article about biology can be made longer. You can help Wikipedia by adding to it.