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Study suggests cleaner wrasse fish know when they are being watched

Cleaner wrasse fish, the tiny reef dwellers that pick parasites off larger clients, behave more cooperatively when a potential customer is watching, according to experimental evidence published in ...
AOL

Cleaner fish display intelligence and self-awareness — just like mammals

A shrimp scrap drifted down the face of a mirror, and a small reef fish tracked it like it was watching a slow-motion experiment. The fish, a blue-streak cleaner wrasse, had carried the shrimp upward, ...
The Sun

Fish species checks body size in mirror – and scientists say it’s the first animal to have ‘self-awareness and goals’

The bluestreak cleaner wrasse exhibits signs of human-level reasoning and judgment A FISH species examines itself in the mirror before deciding whether to fight in what scientists call the first ...