EA Forum Podcast (All audio)

“Fish Have Surprisingly Impressive Mental Capabilities” by Damin Curtis🔹


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Improving the welfare of farmed fish is probably some of the most cost-effective near-term suffering reduction work the EA community engages in.

To celebrate the EA community's amazing work for trillions of fish around the globe, here's a list of ten surprising fish behaviors and capabilities! Hopefully this list will help you/others appreciate the diversity, intelligence, and sentience of fish. Many of these examples are drawn from the excellent book on fish intelligence, What a Fish Knows by Jonathan Balcombe. Enjoy!

1. White-spotted pufferfish spend many hours constructing and maintaining their circular nests.


2. Fish's lack of hands means they are more limited in their tool use. Here, a blackspot tuskfish on the Great Barrier Reef uses a rock as an anvil to bash open a clam.


3. It is not known why mobula rays leap above the water. Some [...]








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First published:

October 27th, 2025

Source:

https://forum.effectivealtruism.org/posts/wjj6EHtA2dEn5pTSK/fish-have-surprisingly-impressive-mental-capabilities

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Narrated by TYPE III AUDIO.

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EA Forum Podcast (All audio)By EA Forum Team