Types of Fish Tail Fins

One means of identifying fish is by the shape of their tail (caudal) fins.  It is a "tell-tail" indicator.

 

 

Lampreys
(Diphyceral fin)

Sharks
(Heterocercal fin)

Sunfishes
(Homocercal fin)

Tunas
(Lunate fin)

Trout
(Emarginate fin)

Jacks
(Falcate fin)

Groupers
(Truncate fin)

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