What does the operculum do in a fish?
Operculum: The operculum is the bony flap that protects the gills from harm. It opens and closes to allow water to pass over the gills. Why is the operculum important? The operculum is a hard, plate-like, bony flap that covers the gills of a bony fish (superclass: Osteichthyes). It protects the gills and also serves…