Fish can recognize themselves in the mirror. Does that mean they’re self aware?

The study casts an unexpected doubt on our very definition of self-awareness.

Monkeys can also recognize themselves in mirrors, but only with training

Only humans and great apes can recognize themselves when looking in a mirror, but new findings suggest that it’s possible for rhesus monkeys to realize they’re looking at themselves if trained properly. The findings bear important implications for humans as well, since they suggest patients with impairment of self-recognition can have their condition remedied with training.