Common name: Red-lined Sea Cucumber

General information

The Red-lined Sea Cucumber, Thelenota rubralineata, is a striking marine invertebrate known for its vibrant red lines that contrast against its dark body. This species is a recent discovery, described scientifically in 2010, and is part of the Holothuroidea class within the Echinodermata phylum. It is a detritivore, consuming organic matter and playing a crucial role in nutrient cycling within its ecosystem.

Care

Caring for Thelenota rubralineata in a home aquarium requires a large tank with a deep sand bed and plenty of live rock to provide hiding places and surfaces for grazing. They are sensitive to water quality and require stable conditions with low nitrate levels. It's important to supplement their diet with detritus and sinking foods to ensure they receive adequate nutrition.

Reproduction

Like many echinoderms, Thelenota rubralineata likely reproduces by releasing gametes into the water column, where fertilization occurs externally. However, specific details about their reproductive habits in the wild or captivity are not well-documented due to the species' recent description and relative rarity in the hobby.

Habitat

Thelenota rubralineata is found in the Indo-Pacific region, particularly around the waters of Northern Australia. They inhabit reef slopes and lagoons, often burrowing in sandy substrates or hiding under rocks during the day.