Question

1. which is a cartilaginous fish?

coelacanth
chimaera
pufferfish
sunfish

Explanation:

Cartilaginous fish have skeletons made of cartilage instead of bone. Chimaeras belong to the class Chondrichthyes, which includes all cartilaginous fish. Coelacanths, pufferfish, and sunfish are bony fish (Osteichthyes) with skeletons of bone.

Answer:

chimaera