シーラカンス
A [[fish]]. Famous for once being thought to have gone extinct around 66 million years ago, but were rediscovered in 1938 off the coast of [[South Africa]]. Ovoviviparous, only two species survive, both critically endangered. They are easy to spot because of their strange appearance; however not all primitive or strange-looking fishes should be tagged as coelacanth. They are lobe-finned fish (from where tetrapods come), as opposed to the most common ray-finned fishes.

They are easily distinguished by their large rhomboidal anal fin, and their characteristic second dorsal fin which is lobed; ray-finned fishes either don't have a second dorsal fin, or it's not lobed. Actually, for coelacanths, all their fins are lobed except the first dorsal fin. Examples of coelacanths are post #470478 and post #974792 (at the top right, just below the sun).

h4. See also

* [[List of animals]]

h4. External links

* "Wikipedia: Coelacanth":http://en.wikipedia.org/wiki/Coelacanth
coelacanth