On a dolphin and most fish the fin behind the dorsal fin is the tail fin. Some fish, such as knife fish, have no dorsal fin or tail fin. Dolphins of course are mammals, not fish.
Dorsal fin
An adipose fin is a soft, fleshy fin found on a fish behind the dorsal fin and ahead of the caudal fin.
The fin on the back of an orca is called the dorsal fin.
The dorsal fin.
The dorsal fin is the fin on the back of a fish, for example the typical triangular fin on the back of a shark is its dorsal fin.
dorsal fin
the female orca's dorsal fin is curved and the males dorsal fin is straight
Dorsal
Dorsal
because of the dorsal fin on their back
dorsal fin
No, a dorsal fin from a fish is on its back area.