Question

explain cartilaginous fish ?

Answer 1

Cartilaginous fish are fish that have a skeleton made of cartilage, rather than bone. All sharks, skates, and rays (e.g., the southern stingray) are cartilaginous fish. These fish all fall into the group of fish called the elasmobranchs.

Answer 2

ANSWER:

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$Cartilaginous \: fish$

=> It has cartilaginous endoskeleton.

=> They have the mouth on the ventral side of the head. 

=> They have placoid scales.


=> Fertilization is internal.


=> Cartilaginous fish possess 'toothlike' scales, called as 'dermal denticles' or placoid scales. It provides protection and streamlining to the fish. 


=> Examples: Sharks, skates.