you have to answer my question
An adipose fin is a soft, fleshy fin found on a fish behind the dorsal fin and ahead of the caudal fin.
Because that's ahow god made them
dolphins need a soft dorsal fin because of their way of swimming. If they were to have a hard, sharp, stiff or even ruff fin it would put weight on them and e tilt them to the side which then would interfere with their other fins.
The fin on the back of an orca is called the dorsal fin.
Caudal fin, Dorsal fin, Pectoral fin, Ventral fin, and the 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.
The main function of the dorsal fin in any animal with a dorsal fin is stability. Some fish have adapted for using the dorsal fin for other uses, such as propulsion in the Sunfish. The anglerfish's dorsal fin has evolved to work as a fishing pole so that the fish can bait and catch their prey.
the female orca's dorsal fin is curved and the males dorsal fin is straight
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.
No, a dorsal fin from a fish is on its back area.
The fin on the top/back of all fish is called the "Dorsal Fin."
Some sharks have a second dorsal fin, it's between the main dorsal fin in the middle of the back, and the tail. Not all fish have a second dorsal fin.