Q41Short answer
Endoskeleton of fishes are made up of cartilage and bone; classify the following fishes as cartilagenous or bony Torpedo, Sting ray, Dog fish, Rohu, Angler fish, Exocoetus.
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Torpedo—Cartilagenous, Sting ray—Cartilagenous, Dog fish— Cartilagenous, Rohu—Bony, Angler fish— Cartilagenous Exocoetus—bony.