• @DragonTypeWyvern@midwest.social
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    2 months ago

    Fish absolutely exist cladistically, OP just didn’t want to admit they’re a land dwelling fish. You believe the implications of cladistics or you don’t, cowards.

    I’d also argue it’s relatively easy to separate fish-fish from land fish from land fish that became sea fish again to bully the fish fish.

      • Tuukka R
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        22 months 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”.

  • @Cryophilia@lemmy.world
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    172 months ago

    Just gonna swing by and drop this little grenade:

    If you believe “race doesn’t exist”, then this post also applies to you. If you can refer to different genders while also understanding that at the individual level definitions are fluid and blurry, then you can refer to different races while also understanding that at the individual level definitions are fluid and blurry.

  • @AngryCommieKender@lemmy.world
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    82 months ago

    We’re all just collectively ignoring the biologist’s username?

    I mean they are definitely correct, but that name detracts from their credibility somewhat.

  • Lovable Sidekick
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    2 months ago

    “Gender is absolutely the same way.” - from How to Start a Vicious Online Argument

    • @Cryophilia@lemmy.world
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      62 months ago

      Honestly I sometimes feel like going to certain online communities and just making a single post that says “gender” and then vanishing and watching the ensuing arguments.

      • Lovable Sidekick
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        2 months ago

        They called him “The Sniper”. He would strike without warning, always vanishing into the ether. No downvote could stop him. No harsh rebuke could change his merciless ways.

  • @Simulation6@sopuli.xyz
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    72 months ago

    I was going to say ‘how about bony fish?’, but then I checked and I am technically a bony fish (Osteichthyes).

  • @Frostbeard@lemmy.world
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    2 months ago

    Regarding “fish” Old classification relied on “phenotype” characteristics. And yes lamprey, a shark or a cod has little in common genetically. But they still share some common traits that distinguishes them considerably from whales, sea lions and seals. I still think the term “fish” is useful, and modern classifications rely more on genetics so I would say that the argument is semi void.

    • Log in | Sign up
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      62 months ago

      They didn’t say that fish wasn’t a useful concept, they said that the more you delve into the facts, the less certain you can be that it has a definite meaning that can be pinned down scientifically.

      People think the science agrees with them that the world can be divided into fish and not fish, but that’s absolutely not what the science is saying, and their understanding is superficial.

      Similarly, the terms male and female are generally quite useful, but the people who think that there’s some kind of scientific and absolute binary distinction between them are just incorrect, and their understanding is superficial.

    • @ShinkanTrain@lemmy.ml
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      2 months ago

      When organizing the big family tree of everything that’s alive, you use clades, which means a group that all of the individuals in it have the same common ancestor. E.g. All vertebrates, wether mammals, reptiles, etc, have the same vertebrate ancestor. Mammals also share the same tetrapod ancestor, so they’re all tetrapods.

      Fish doesn’t work like that, because we don’t count all the its ancestors as fish (tetrapods have a common bony fish ancestor, for example, but you wouldn’t call a parrot a fish). But you know what a fish is. We call this a paraphyletic group.

  • @FortyTwo@lemmy.world
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    12 months ago

    Slightly off-topic from the intended point, but I’ve heard this more often, that there’s no such thing as a fish, but it’s a useful constructed concept to have.

    So why is it so important that we all remember that animals like whales are not fish, they’re mammals? Didn’t stop us from calling animals from other groups fish, why should mammals get a special treatment?

    • @Droechai@lemm.ee
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      22 months ago

      Because mammals got those mammaries. So deeply rooted that humans can’t stop putting them even on non-mammals when we want to anthropomorphise in stories, myths and art

    • @Cryophilia@lemmy.world
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      22 months ago

      The point is to emphasize that whales biologies are significantly different from other similar-looking things, not technicalities about which named group they belong to.