This fish can identify familiar faces, study shows

A species of fish can tell apart individual members of their own species—even though they lack the part of the brain that is usually used to tell apart faces, initial research shows.

 

According to a presentation at the Behaviour 2015 conference, scientists explained how the Ambon damselfish (Pomacentrus amboinensis) can tell their fellow damselfish apart using ultraviolet patterns on their faces.

 

“Recognition and correct classification of visually acquired objects is important for the survival of all creatures,” the researchers said. This is especially important if you need to identify another animal as a predator or competition.

 

During the study, damselfish were able to identify specific faces within their own species, being “highly sensitive” to slight differences in facial patterns. They were also able to tell apart members of their own species and another similar species.

 

“I was amazed at how well these fish could discriminate facial patterns that were almost identical to my eyes,” said experiment leader Ulrike Siebeck, according to National Geographic.

 

What’s interesting is that the damselfish can recognize faces even though they don’t have a neocortex, the part of the brain used to tell apart faces. — Bea Montenegro/TJD, GMA News