Yellow-Spotted Guard Crab

Trapezia flavopunctata

The Yellow-spotted Guard Crab, a member of the family Trapeziidae, is a species of guard crab known for its role in protecting coral reefs. These crabs are typically found in the Indo-Pacific region, inhabiting tropical waters. They are benthic creatures, living at depths ranging from the surface to 40 meters, with most occurrences being shallower than 20 meters. Yellow-spotted Guard Crabs are often associated with coral reefs, where they play a symbiotic role. They are epizoic, living on the surface of corals and engaging in mutualistic relationships with their hosts. These crabs are known for their territorial behavior, often defending their coral homes from potential threats. Their mating behavior includes a precopulatory courtship ritual, which involves olfactory and tactile cues, and they typically engage in indirect sperm transfer. Divers encountering these crabs will find them nestled within the coral structures, where they can be observed actively guarding their territory. Currently, there is no evaluation of their conservation status by the IUCN.