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This Fish Has Challenged Our Theories of Self-awareness in Animals

News   Feb 08, 2019 | Original Press Release from the Max-Planck-Gesellschaft

 
Tiny Fish Can Recognize Itself in the Mirror

A cleaner wrasse interacts with its reflection in a mirror placed on the outside of the aquarium glass. Note that the mirror itself cannot be seen in this photo because the aquarium glass itself becomes reflective at the viewing angle of the camera, according to Snell's law. This is not the case for the fish itself, which sees the aquarium glass as transparent because of its direct viewing angle. Credit: Alex Jordan

 
 
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