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Evolution Factsberg
(mander.xyz)
A place for majestic STEMLORD peacocking, as well as memes about the realities of working in a lab.

Rules
Any scientific definition of 'fish' which includes all the things we commonly consider to be fish also includes basically all animal life on earth (including humans and, presumably, pterodactyls).
Edit: Though generally this is avoided by declaring that 'fish' is not an evolutionary category.