Question

Difference between heterocercal tail and homocercal tail

Answer 1

HETEROCERCAL TAIL:-
1] The type of tail which extends from the vertebral column into the tail.
2] The caudal fin below vertebral column is much larger than that of the above one.
3] Usually found in cartilagenous fishes.
3]Example:-Shark,Families Acipenceridae and polyodontidae
HOMOCERCAL TAIL:-
1]The type of tail which does not extend from the vertebral column into the tail.
2]the caudal fin has two lobes of equal size.
3]Usually found in bony fishes.
4]Example:-Swordfish.

Answer 2

Heterocercal tail:

• A heterocercal tail is a type of tail that extends from vertebral column to the tail.
• The fin below the vertebral column is very larger than the above one. This type of tail is usually found in cartilaginous fishes.
• For example sharks and polyodontidae.

Homocercal tail:

• A homocercal tail does extent from vertebral column to tail.
• The fins have two lobes and both are equal.
• It is generally found in bony fish such as 'catfish'.