Fins: Help a fish move. The top fins are called dorsal fins. If there are two dorsal fins, the one nearest the head is called the first dorsal fin and the one behind it is the second dorsal fin.

Some dorsal fins look like a skinny finger extending from ... For his May paper in Scientific Reports, Presti performed a ...

Frogfish have four dorsal fins, the first of which is the “fishing rod” located on top of the head – it is also called the illicium. It forms a long shaft (stop it), on top of which can be ...