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Why don't you go check it out yourself? https://en.wikipedia.org/wiki/Brain-to-body_mass_ratio https://en.wikipedia.org/wiki/Brain-to-body_mass_ratio https://

• nsonha 5y ago
  check what? You posted some links that explain a metric which was theorized to measure intelligence. That wasn't what I requested source for (it's a theory). I asked for a source that says this theory is the prevalent theory. Btw I never made any comment about fish's brain size, I said they're generally less intelligent than farm animals, which wikipedia agrees with, fits the brain ratio theory too: https://en.wikipedia.org/wiki/Fish_intelligence#Brain https://en.wikipedia.org/wiki/Fish_intelligence#Brain Thanks for derailing the conversation anyway, at the end, there is no such thing as a fish