Question

Question 41
Endoskeleton of fishes are made up of cartilage and bone; classify the following fishes as cartilaginous or bony: Torpedo, Stingray, Dogfish, Rohu, Anglerfish, Exocoetus.

Answer 1

Torpedo—Cartilaginous
Stingray—Cartilaginous
Dogfish— Cartilaginous
Rohu—Bony and cartilage
Anglerfish— Cartilaginous
Exocoetus— Bony

Bony fishes are those whose skeleton is made of bones, while cartilaginous fishes have a skeleton made of soft, flexible cartilage.

The cartilaginous fishes include the sharks, skates and rays.

These are fishes with a bony skeleton are tuna, sardines, codfish, salmon, trouts, herring etc.