The rock-mover wrasse grows to be 12 inches long, but the babies look more like a piece of limu (seaweed) than a fish. The two-inch-long baby rock-movers have branching fins that grow out from ...

The fish is smashing the cockle (a type of clam) against the rock, using it as an anvil rather than as a hammer, but that still clearly fits the definition of tool usage, Brown told Life's Little ...

Wrasse are among the largest fish families, including many that go ... For smaller wrasse, or larger prey, a convenient rock expands the range. Nevertheless, there is a price to pay for this ...

But now, incredibly, new research suggests that the cleaner wrasse—a tiny, tropical reef fish—can recognize itself too, making it the first fish to do so. Scientists have long used a mirror ...

Researchers at Osaka Metropolitan University in Japan have discovered that the 'cleaner' wrasse fish, Labroides dimidiatus, is able to recognise itself in a photo. The species is known to attack ...

Large numbers of multiple species of fish at the edge of a rock reef off San Benedicto Island in the Revillagigedos Archipelago. Credit: Allison & Carlos Estape Researchers encountered the new wrasse ...

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 ...

The bluestreak cleaner wrasse is just one of about 600 different species of wrasse. It's a little thing, about 3.9 inches (10 cm) long on average, with, well ... a blue streak down its side.

4 in the journal Raffles Bulletin of Zoology. He recognized that it was a razor wrasse fish, but it didn’t match any known species. The fish from the market had a “large” black and white ...