Cleaner wrasse have revealed a remarkable new side of fish intelligence. Marked with fake parasites, they used mirrors to inspect and remove the spots—far faster than seen in earlier tests. Even more ...

A tiny fish has shown signs of a remarkable level of intelligence in mirror test experiments, not only recognizing itself in ...

Groups of fish give a schooling to solitary travelers--they expend 79 percent less energy. By Laura Baisas Published Jun 6, 2024 2:00 PM EDT Deposit Photos Get the ...

For years, scientific divers at a research station in the Mediterranean Sea had a problem: at some point in every field ...