Before squaring up for a fight, some fish check themselves out in the mirror to make sure they're big enough. This strange behavior was seen in bluestreak cleaner wrasse (Labroides dimidiatus), who ...

Mirror Self-Recognition (MSR) is seen as evidence for self-awareness and passing the mark test, in which animals touch or scrape a mark placed on their body in a location that can only be indirectly ...

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, ...

Researchers address criticisms to previous work by providing additional evidence to suggest the cleaner fish Labroides dimidiatus has Mirror Self-Recognition. Mirror Self-Recognition (MSR) is seen as ...

A species of fish, the cleaner wrasse (Labroides dimidiatus), responds to its reflection and attempts to remove marks on its body during the mirror test—a method held as the gold standard for ...

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