Based on the replies you've gotten so far I suspect this may be a joke I'm not getting, but I'm choosing to react as if it's a genuine question anyway.

A coelacanth is a super old fish that everyone thought was extinct, and then one day we just happened to find them alive! They're a "living fossil" animal in that they haven't changed much in a very long time and give us a window into the past. Here's a picture I stole:

[–] P00ptart@lemmy.world 2 points 3 days ago

Too many fins. Don't like it because it didn't evolve into something on land. Selfish jerks.

[–] blockheadjt@sh.itjust.works 13 points 3 days ago

Understandable, I only know what they are from Animal Crossing.

It's a fish you can only catch while it's raining.

[–] tetris11@feddit.uk 2 points 3 days ago

oof, I can feel the secondhand embarassment

[–] elucubra@sopuli.xyz 1 points 3 days ago

Tell us tomorrow

[–] baines@lemmy.cafe 0 points 3 days ago (1 children)

it’s the single hole used for both shitting and sexual reproduction

[–] otter@lemmy.dbzer0.com 1 points 3 days ago

Cloaca*