Whether you're a beginner or an expert, we found the best islands for snorkeling where you'll spot large schools of fish, ...

As well as chemical, mechanical and freshwater treatments, in recent years the use of cleaner fish has helped to keep lice numbers down. Lumpfish (Cyclopteridae) and wrasse (Labridae) are natural ...

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 ...

This groundbreaking research challenges our understanding of fish cognition and forces us to reconsider what we know about animal consciousness. In particular, cleaner wrasses (Labroides dimidiatus) ...

Off the coast of Brazil, a scuba diver captured something remarkable on video: a wrasse fish gripped a mollusk in its mouth, darted toward a rock, and began pounding the shell until it cracked open.

These fish tuck themselves in for the night! They burrow into the sand so that only their heads are peeking out. These fish can eat gastropods (a type of mollusks), and small crustaceans. They can ...

Brightly colored and affordable, the yellow wrasse is a useful fish as it combats pyramid snails and flatworms ... They are moderately aggressive, with territorial males guarding their harem. Also ...

Some transition into males at a later stage in their lives. This fish is commonly found in reef communities in the western Atlantic and Gulf of Mexico. They can live in both salt and brackish water ...

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.

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 ...

Bluestreak cleaner wrasse are small, territorial fish that aggressively fend off intruders. But when they have access to a mirror, the fish size themselves up before deciding whether or not to fight.

An Osaka Metropolitan University-led team has demonstrated that bluestreak cleaner wrasse (Labroides dimidiatus) check their body size in a mirror before choosing whether to attack fish that are ...