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Smart is sexy – new study on fish doing puzzles hints intelligence partly evolved via sexual selection

By Ivan Vinogradov, Animal Behaviour Researcher, Australian National University

We humans often underestimate the intelligence of other animals. You’ve probably seen videos of monkeys, ravens or parrots solving puzzles.

But fish also possess impressive problem-solving skills, despite the notorious slander that goldfish have a three-second memory.

The intelligence of animals can be a useful tool when testing various ideas in biology.…

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