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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