Common name: Mosaic Boxer Crab

General information

The Pom Pom Crab, scientifically known as Lybia tessellata, is a small and fascinating marine invertebrate popular among reef aquarium enthusiasts. This species is known for its unique behavior of holding small anemones in its claws, which resembles cheerleading pom-poms, hence the name. The crab uses these anemones for both defense and feeding, as the stinging tentacles can deter predators and help capture food particles.

Care

Pom Pom Crabs are relatively easy to care for in a home aquarium. They require a tank with plenty of live rock and hiding places to feel secure. These crabs are generally peaceful and can be kept with a variety of tank mates, but they should not be housed with large, aggressive fish that may harm them. They are scavengers and will eat a variety of foods, including meaty foods and detritus.

Reproduction

In captivity, Pom Pom Crabs can reproduce if a male and female are present. The female carries the fertilized eggs until they hatch into larvae. Raising the larvae to adulthood can be challenging and requires a separate rearing tank with appropriate food and water conditions.

Symbiosis

The most notable symbiotic relationship of Lybia tessellata is with small sea anemones, typically from the genus Triactis or Bunodeopsis. The crab maintains a mutualistic relationship with these anemones, using them for defense and feeding, while the anemones benefit from increased food availability and transportation to new feeding grounds.

Habitat

Pom Pom Crabs are found in the Indo-Pacific region, inhabiting coral reefs and rubble areas where they can find shelter. They are typically seen at depths where reef structures provide ample hiding spots.