The typical dorsal fin is a triangular-shaped piece of skin wrapped around muscles and bony spines or rays that sits on a ...

"It is a deep-water fish that spends time floating vertically in the water column to camouflage itself, trailing the elaborate red first spines of its dorsal fin and pelvic fins." The man in the ...

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.

Photographer David Jara Boguñá filmed a humpback anglerfish (Melanocetus johnsonii, a species of black seadevil) swimming ...

These upright fish have a dorsal fin that flutters 30 to 70 times per second to provide forward propulsion. They also have a set of small pectoral fins near the back of their head that are used to ...

Atlantic bluefins are warm-blooded, a rare trait among fish, and are comfortable ... They can retract their dorsal and pectoral fins into slots to reduce drag. And some scientists think the ...

But Fish adds that the caudal fin may play a larger role than the dorsal fin in the tuna’s swimming skills. His own studies of these animals have shown this to be especially true when they turn ...

Its teeth are designed not so much to grab or slice fish but to prevent them from ... In addition to their paired fins, the second dorsal and anal fins also have stout, muscular lobed bases.

The scales and body patterns are also painted between these layers, and the dorsal fin completes the koi fish. Sometimes, pebbles, twigs, and even coins can be added between the layers.