The endangered humphead wrasse, a reef fish that swims the seas from Africa to the South Pacific, is in high demand in mainland China and Hong Kong as a luxury culinary delicacy. Despite harvest ...

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Cleaner wrasse play an important role in keeping other reef fish clean and parasite-free. In the study, the fish demonstrated "contingency testing" skills, an attempt to figure out cause-and-effect.

The biodiversity of Earth's oceans is disproportionately concentrated in coral reefs—the vibrant undersea ecosystems where thousands of known marine species reside. A new Yale-led study offers insight ...