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A comment on Biologists Discover Four New Octopus Species in the Deep Ocean Off Costa Rica. Parent comment

Re:Biologists Discover Four New Octopus Species in the Deep ... by crawancon on Monday February 19, 2024 @11:31AM (#39431634)
I think it's because they are very intelligent vs fish or sheep. The arbitrary line seems to be intelligence but I am not saying it's a good line.
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Re:Biologists Discover Four New Octopus Species in the Deep ... by pvaldes on Monday February 19, 2024 @04:56PM (#39435317)
Fishes can be very intelligent in fact. Many are more clever than mammals of its same size for sure.

They can do basically anything that a bird does, but underwater, and also a lot of tricks that we can't do.

There is not a single bird or mammal crystal transparent, or electrical, or bioluminiscent, or that could change their color at will in seconds. If I remember correctly, the vertebrates with the biggest brain/body weight ratio, or the fastest movement registered, are fishes.

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