The intricate relationships between cleaner fish and cleaner shrimp underpin some of the most compelling examples of mutualism in coral reef ecosystems. These interactions involve smaller organisms ...

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, ...

Some coral reef ecosystems famously have “cleaning stations,” where fish line up to be cleaned by other species of fish and shrimp. Entomologist Mark Moffet recently published observations of what ...