Common name: Red and black edged white flatworm

General information

Maiazoon orsaki, commonly known as Orsaki's Coral Crab, is a fascinating species of crab that has captured the interest of many reefkeeping enthusiasts. This species is known for its striking appearance and its unique relationship with certain coral species. Orsaki's Coral Crab is relatively small, making it a suitable inhabitant for various sizes of reef aquariums.

Care

Caring for Maiazoon orsaki requires attention to the aquarium's environment. These crabs thrive in well-established reef tanks with plenty of live rock for hiding and foraging. They are generally peaceful and can coexist with a variety of tank mates. However, it's important to ensure that the tank is not overcrowded and that there is a stable supply of food, as these crabs scavenge for detritus and small food particles.

Reproduction

Little is known about the reproductive habits of Maiazoon orsaki in the home aquarium. In the wild, crabs typically release larvae into the water column, which then go through several planktonic stages before settling and growing into adults. Breeding these crabs in captivity may be challenging due to the complex life cycle and the need for specific larval rearing conditions.

Symbiosis

Maiazoon orsaki has a notable symbiotic relationship with certain stony corals, particularly those in the genus Pocillopora. The crab resides within the coral's branches, gaining protection from predators. In return, the crab may help to keep the coral clean by removing debris and detritus, although the full extent of this symbiotic relationship is still being studied.

Habitat

Orsaki's Coral Crab is found in the Indo-Pacific region, where it inhabits coral reefs. It is often associated with Pocillopora corals, which provide it with shelter and a place to forage for food. The specific depth range of its natural habitat is not well documented, but like many reef-associated species, it is likely to be found at depths accessible to recreational divers.