Common name: Stalked ascidian

General information

The Bluebell Tunicate, Clavelina robusta, is a colonial tunicate species that adds a unique and fascinating element to the reef aquarium. These invertebrates are known for their translucent blue, bell-shaped bodies that are connected by a common base or stolon. They are filter feeders, drawing in water to extract plankton and other nutrients.

Care

Bluebell Tunicates require stable water conditions with good water flow and high water quality to thrive. They are sensitive to changes in water parameters, so regular monitoring is essential. They should be provided with a moderate to strong current to mimic their natural environment and facilitate their filter-feeding behavior. Supplemental feeding with phytoplankton or fine particulate foods can benefit their growth and health.

Reproduction

Clavelina robusta reproduces both sexually and asexually. In sexual reproduction, they release sperm and eggs into the water column, where fertilization occurs. The resulting larvae settle and form new colonies. Asexually, they can bud from the stolon, creating genetically identical clones that expand the colony.

Habitat

Bluebell Tunicates are typically found in shallow waters, often attached to hard substrates like rocks or coral rubble. They are distributed in the Indo-Pacific region, including the Red Sea, Indian Ocean, and the western Pacific Ocean. In the aquarium, they should be placed in areas with adequate flow and away from aggressive neighbors that may overgrow or damage them.