Researchers have uncovered in anglerfish a specialized motor neuron population for the first dorsal fin used for 'fishing'. When the first dorsal fin evolved from a swimming and buoyancy aid to a ...
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.
Frogfish have four fins located on their back, known as the dorsal fins, that play important roles in the fish's lifecycle. The dorsal fins in the middle of the fish's body are used for engaging ...