Yellow Sea Cucumber (Colochirus robustus)

Max Size: 3 inches
Diet: Filter Feeder
Temperament: Peaceful
Reef Compatible: Yes
Minimum Tank Size: 20 gallons

*Venomous When Stressed or Dies*

The Yellow Sea Cucumber, native to the Indian Ocean, boasts a remarkable appearance with its vibrant yellow color and elongated body adorned with spiky projections. In reef aquariums, they serve as captivating filter feeders. To maintain their well-being, these sea cucumbers rely on live rock, which provides essential nutrients. They prefer locations with moderate to strong water currents, utilizing their branchy feeding arms to gather food.

Creating an environment with a small group of Yellow Sea Cucumbers may lead to spawning in the home aquarium. Additionally, they have the ability to reproduce by dividing into two individuals, which can occur due to stress or as a sign of good health.

To keep them healthy, their diet should consist of liquid or dried phytoplankton and zooplankton. Stirring the substrate regularly releases beneficial bacteria and detritus into the water, supporting their nutritional needs. In case of malnourishment, the sea cucumbers may shrink in size and lose feeding arms, in which case it is crucial to increase the number of feedings and provide appropriate food.

As with other sea cucumbers, such as the Sea Apple, Colochirus robustus has the potential to be harmful to the aquarium inhabitants. However, the risk of this happening is minimal unless the sea cucumber is inadvertently sucked into an uncovered pump intake or overflow box.

To ensure a smooth acclimation process and compatible tankmates, it's vital to use the drip-acclimation method, which reduces exposure to fluctuating water conditions. Moreover, Yellow Sea Cucumbers are sensitive to high nitrate levels and copper-based medications, so these should be avoided to maintain their well-being.