The flap of tissue that covers a bony fish gill is the bony operculum.
The gills of a fish.
The fin located behind the operculum on a perch fish is the Pectural Fins (paired).
Jawless fish are cartilaginous, but they do not have jaws. Class Chondrichthyes, which contains most cartilaginous fish, like sharks, have powerful jaws.
This is called the operculum
It opens and closes like its breathing.
the gill operculum covers and protects the gills.
The operculum in a perch is a bony flap covering and protecting the gills located on each side of the fish's head. It is part of the fish's respiratory system, helping to regulate the flow of water over the gills for oxygen intake.
OPERCULUM
operculum ( plural ; operculi ) is actually gill cover or lid of a cavity having gills . its major function is to protect gills as well as to move water over gills so that gill may be able to extract oxygen from water . as this lid play an important role in moving water over gills so fishes having operculum can survive even if they are stationary . on other hand fishes lacking operculi have to move continuously to survive .all bony fishes have operculi . best example of fish having no operculum is shark.
The operculum is part of the respiratory system in fish. It is a bony flap that covers and protects the gills, helping with the process of obtaining oxygen from water.
OPERCULUM