Colochirus robustus

Datasheet

General Description

The Yellow Sea Cucumber, scientifically known as Colochirus robustus, is a striking marine creature originating from the Indian Ocean. Its vibrant yellow coloration and elongated body with spikey projections make it a visually captivating addition to marine aquariums. When feeding, this sea cucumber extends its branchy feeding arms into the current, showcasing its elegance as a filter feeder.

Aquarium Suitability

The Yellow Sea Cucumber is deemed suitable only for expert aquarists due to its specific care requirements and potential risks associated with its presence in the tank. It is a filter feeder, relying on live rock in the aquarium to provide the necessary nutrients for its sustenance. Adequate water conditions, including moderate to strong water flow, are essential for its well-being.

Demands, Care, and Hardiness

Requiring meticulous care, the Yellow Sea Cucumber demands a well-established reef aquarium setup with stable water parameters. It is crucial to provide a balanced diet of liquid or dried phyto and zooplankton to ensure its nutritional needs are met. Regularly stirring the substrate can help release beneficial bacteria and detritus into the water, supporting the sea cucumber's health.

Reef Suitability

Reef-compatible, the Yellow Sea Cucumber serves as a beautiful filter feeder within a reef environment. Its peaceful temperament makes it a suitable addition to a community reef tank, where it contributes to the ecosystem by filtering the water and aiding in nutrient recycling.

Aquarium Setup

Ideal for tanks with medium water flow, the Yellow Sea Cucumber thrives in environments with a pH range of 8.1 to 8.4, a specific gravity of 1.023 to 1.025, and a carbonate hardness (KH) of 8-12. To maintain its health, supplementing the tank with calcium, magnesium, strontium, iodine, and trace elements is recommended.

Behaviour

Known for its peaceful nature, the Yellow Sea Cucumber typically exhibits filter-feeding behavior and contributes to maintaining water quality in the aquarium. It is essential to acclimate this species carefully, preferably using the drip-acclimation method to reduce stress and ensure a smooth transition to its new environment.

Feeding and Diet

As a filter feeder, the Yellow Sea Cucumber primarily consumes phytoplankton and zooplankton to meet its nutritional requirements. Regular feedings and target feeding with appropriate foods are crucial to prevent malnutrition, which can result in a decrease in size and loss of feeding arms.

Dimorphism and Captive Reproduction

In a suitable environment, a small group of Yellow Sea Cucumbers may spawn in the home aquarium or reproduce through fission, splitting into two individuals. These reproductive behaviors are indicators of the sea cucumber's health and well-being in captivity.

Habitat and Distribution

Colochirus robustus, the Yellow Sea Cucumber, is commonly found in the Indian Ocean, inhabiting areas with moderate to strong water currents. In their natural habitat, these filter feeders play a vital role in maintaining ecological balance by filtering the water and processing organic matter.