Lobe-finned fish had rounded, fleshy fins, and they also had lungs along with their gills, which allowed them to breathe air.

image:Aetheretmon (facing right), an early ray-finned fish, swims in a 348-million-year-old river in Foulden, Scotland. Aetheretmon exhibits the ancestral state of two distinct 'tails', fleshy ...

Fish fossils reveal how tails evolved, professor finds Date: December 6, 2016 Source: University of Pennsylvania Summary: A paleobiologist's study reveals that the tails of fish and the tails of ...

The adipose fin, which is a small fleshy fin behind the larger dorsal fin, is found on a few fish. Officials say most trout and salmon with an adipose fin clip have a coded-wire tag in their snout.

Wild steelhead can be identified by their intact adipose fin – the small, fleshy fin located on the fish’s back.

More advanced fishes also have paired pectoral (lateral fins near the shoulder) and pelvic (lateral fins located near the hip) fins, as well as a small adipose fin (a small, fleshy, fin behind the ...

Prehistoric lobe-finned fishes like Tiktaalik were anatomically very close to the earliest known tetrapods (four-legged animals), the first backboned critters to invade land some 360 million years ...