Observation of a coral-dwelling gall crab (Cryptochiridae) in a dead coral host highlights their vulnerability to reef degradation

Coral-associated fauna contributes greatly to coral reef biodiversity. Many species are obligately associated with their hosts on which they depend for food and/or refuge from predators. Their close relationship makes them vulnerable mortality. Here I report a coral-dwelling gall crab (Cryptochiridae) inhabiting partially dead Echinopora Lamarck, 1816 coral, at Magoodhoo Island, Faafu Atoll, Maldives. Cryptochirids thought feed off the mucus provided by host, although some questions about feeding biology remain. This observation highlights that these crabs remain even if it can no longer provide nutrients. The strong host association widespread habitat degradation.