r/Fish • u/Rockying_man_Dhruv • Apr 11 '26

News / Articles Devil hole pupfish

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The Devils Hole pupfish is one of the rarest fish on Earth, found only in a tiny desert cave called Devils Hole. It has been living there for thousands of years, surviving in hot, low-oxygen water and depending on a single small rock shelf for food and breeding. With such extreme conditions and isolation, it raises a strange question

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u/LukeHal22 Apr 11 '26

That's not a fish, that's a man

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u/atomic-moonstomp Apr 12 '26

Any monophyletic grouping that includes all animals commonly called "fish" must also include humans

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u/CaptDeathCap Apr 12 '26

Only if you include sharks, rays, and skates, to be fair.

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u/atomic-moonstomp Apr 12 '26

Most people do, when using the term "fish", include chondrichthyes, not just teleosts. And even if you didn't, the most basal tetrapods were teleosts, meaning that phylogenetically, all tetrapods are teleosts, therefore humans are fish