Dorsal fin
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.
the scientific name for the blood fin tetra fish is Aphyocharax anisitsi
I call it a sketch of a fish's fin. I am sorry if this does not help, but unless there is a fancy name for it I'm pretty sure its a sketch of a fish's fin. Answer: I call it a sketch of a fish's fin too but on my math hw thing it says u call it a scale drawing. how dumb is that?
Another name for a tail fin is a caudal fin. It is the fin located at the end of a fish's body, which helps with stability and propulsion.
lateral fin
Anglerfish.
The tail fin of a fish (the caudal fin) is a fish's means of propulsion through the water.
It's the ventral fin and My best Guess to it's purpose is that it helps stablize the forward movement in the fish, bit like the skegs on kayaks. possibly gives some direction control, like a rudder, and streamlining as well
The fin on the top/back of all fish is called the "Dorsal Fin."
Same an in humans... The spine. However, you questions says 'ON A FISH' so you may be thinking of the fin on a shark? In that case it is called the dorsal fin.
No, a dorsal fin from a fish is on its back area.
Most fish typically have 7 fins in total. - The dorsal fin. Prevents fish from rolling. - Adipose Fin. Makes the fish hydrodynamic. - Caudal Fin (tail). Propels the fish through the water. - Pectoral fin (x2). helps the fish steer and halt. - Pelvic fin. Helps the fish steer and halt. - Anal fin. Keeps the fish from rolling.