This fish knows its own face in a mirror - Nature.com

The bluestreak cleaner wrasse attacks composite images of its own body and another fish’s head — but not pictures of its own head on another fish’s body.

A bluestreak cleaner wrasse looks at its reflection in a mirror.

Fish might not be the brainiest of animals, but new research suggests that some of these finned creatures can recognize their own faces in a mirror — an indication of self-awareness that has so far been found only in humans and a few other species 1.

You are using a browser version with limited support for CSS.

To obtain the best experience, we recommend you use a more up to date browser (or turn off compatibility mode in Internet Explorer).

In the meantime, to ensure continued support, we are displaying the site without styles and JavaScript.