Common name: Graeffe's Sea Cucumber

General information

Pearsonothuria graeffei, commonly known as Graeffe's Sea Cucumber or simply Sea Cucumber, is a strikingly colored echinoderm that is often sought after by advanced reef hobbyists. This species is known for its unique coloration, with a pattern of black and white stripes and yellow or orange tubercles. It is a detritivore, playing a crucial role in the ecosystem by consuming detritus and recycling nutrients.

Care

Graeffe's Sea Cucumber requires a well-established reef tank with a deep sand bed and plenty of live rock. It is sensitive to changes in water quality, so stable conditions and excellent filtration are essential. This species is not recommended for beginners due to its specific care requirements and potential toxicity if stressed or dies.

Reproduction

In the wild, sea cucumbers like Pearsonothuria graeffei reproduce by releasing sperm and eggs into the water column, a process known as spawning. In the aquarium, breeding is rare and not well documented.

Symbiosis

Pearsonothuria graeffei does not have any known obligate symbiotic relationships like those seen in clownfish and anemones. However, it contributes to the overall health of the reef ecosystem by cleaning the substrate.

Habitat

This species is found in the Indo-Pacific region, from the Red Sea to the waters around Australia and the Philippines. It prefers reef environments with plenty of hiding places and a substrate suitable for foraging.