A small coral reef fish can recognize itself in a mirror. This discovery challenges long-held ideas about animal intelligence ...
In this undated photo provided by researcher Alex Jordan in February 2019, a cleaner wrasse interacts with its reflection in a mirror placed on the outside of the aquarium glass. The mirror itself ...
Fish introduced to a mirror began to act strangely, swimming upside-down or spreading their fins. They also tried to scrape a mark from their throats. Reading time 5 minutes New research seems to ...
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