this post was submitted on 24 Mar 2025
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Microblog Memes

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Fish (slrpnk.net)
submitted 2 weeks ago by Track_Shovel@slrpnk.net to c/microblogmemes@lemmy.world
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[–] Droechai@lemm.ee 5 points 2 weeks ago (2 children)

Is fish just another name for vertebrates ?

[–] DragonTypeWyvern@midwest.social 9 points 2 weeks ago* (last edited 2 weeks ago)

Nah. You could have a fish that evolved out of having a spine (see: Chuck Schumer) but you can't evolve out of a clade.

[–] Tuuktuuk@sopuli.xyz 2 points 2 weeks ago

Seems so. Wikipedia tells there are seven classes of vertebrates:

  • Agnatha (jawless fishes, paraphyletic)
  • Chondrichthyes (cartilaginous fishes)
  • Osteichthyes (bony fishes, paraphyletic)
  • Amphibia (amphibians)
  • Reptilia (reptiles, paraphyletic)
  • Aves (birds)
  • Mammalia (mammals)

So yes, fishes is the same thing as vertebrates.

Probably because if you were a vertebrate living in the sea, you needed some sort of gills and fins and such. And those are what makes people assume something is a "fish".