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 at Osaka Metropolitan University in Japan have discovered a previously undiscovered behavior in cleaner wrasse (Labroides dimidiatus). When presented with a mirror, the tiny fish not only ...

Reef "beauty salons" staffed by tiny cleaner fish aren t just for parasite removal they may also shape the microbial life of the entire ecosystem. A fascinating new study shows these bustling fish ...