Features of Fish: Bony Fishes

The video discusses bony fish, or Osteichythes, the largest class of vertebrates. It covers their diversity, habitats, and key characteristics. The major groups include lobe-finned, lung, and ray-finned fishes. Lobe-finned fishes, once thought extinct, include the coelacanth. Lung fishes can breathe outside water. Ray-finned fishes, the largest group, have fan-like fins and are widely distributed. Their evolution is well-documented in the fossil record.

How do ray-finned fishes differ from lobe-finned fishes in terms of their physical structure?

What is the evolutionary significance of ray-finned fishes as indicated in the fossil record?