If you're not really into salt-water tanks or don't spend a lot of time in coral reefs, there's still a high probability you may have heard of the bluestreak cleaner wrasse fish. Likely because last ...

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 ...

New findings suggest bluestreak cleaner wrasse understand how their body size stacks up against a rival Sarah Kuta Daily Correspondent Bluestreak cleaner wrasse are small, territorial fish that ...

Before deciding whether or not to fight another fish, cleaner wrasse check their own reflection in a mirror and size themselves up. First, Taiga Kobayashi at Osaka Metropolitan University in Japan and ...

A bluestreak cleaner wrasse (Labroides dimidiatus) swims in a tank at right, with its mirror image at left. Credit: Osaka Metropolitan University An Osaka Metropolitan University-led team has ...

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 ...

Reef ecology Baby damselfish do better on coral reefs that are inhabited by other fish that keep them free of parasites, a new study has found. The findings are published today in the Royal Society ...

Scientists often warn against anthropomorphism — the attribution of human characteristics to animals or even nonliving things. But it’s hard to resist the charm of Labroides dimidiatus, a species of ...