Question

On which type of fish are the gills covered with operculum?

Answer 1

Such gills are characteristic of cartilaginous fish such as sharks, and rays, as well as primitive fish such as lampreys. In contrast, bony fishes have a single outer bony gill covering called an operculum.

Answer 2

Cartilaginous fish and primitive fish have covered gills known as an operculum.

Some of the common examples of these include:

Cartilaginous fish- like sharks and Rays

Primitive Fish- Lampreys

The operculum is a series of bones which is found in bony fish.

These act as facial support and also cover the gills.

Additionally, these are also used for respiration and feeding.