Cleaner wrasse show self awareness in stunning mirror experiments

ScienceDaily
Feb 23, 2026, 1:55 am63 pts
Cleaner wrasse have revealed a remarkable new side of fish intelligence. Marked with fake parasites, they used mirrors to inspect and remove the spots—far faster than seen in earlier tests. Even more striking, some fish dropped shrimp in front of the mirror to watch how its reflection moved, a form of…

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