Comment on Not impressed
runner_g@lemmy.blahaj.zone 11 hours agoBeing cold blooded and living “wholly in water” are also requirements.
Comment on Not impressed
runner_g@lemmy.blahaj.zone 11 hours agoBeing cold blooded and living “wholly in water” are also requirements.
grue@lemmy.world 9 hours ago
Nah, phylogenetically speaking, all descendants of fish must also be fish, by definition. Therefore, “being cold blooded” cannot also be a criterion (not that it would work anyway since tuna are warm blooded, BTW, and nobody would argue tuna aren’t fish).
The “living wholly in water” criterion actually works, though: land-fish (e.g. humans) live inside a bag of water that we carry with us.