Question

Do Hagfish Have An Operculum?

Answer 1

Hagfish:

1. A fish without a jaw is called a hagfish.
2. An operculum is a group of bones that serves as a support structure for the face and a protective covering for the gills in bony fish and chimeras.
3. Hagfish have a cartilaginous head and a fibrous and cartilaginous skeleton.
4. The operculum is absent in cartilaginous fish.
5. The notochord, which runs the length of the body, is the main supporting structure.