Common name: Tropical Rock Barnacle

General information

The Tropical Rock Barnacle, Tetraclita stalactifera, is a species of acorn barnacle in the family Balanidae. It is known for its distinctive, conical shape and the pronounced ridges on its calcareous plates, which resemble stalactites, hence its name. This barnacle is found in warm, tropical waters and is a sessile invertebrate, meaning it permanently attaches itself to hard substrates such as rocks, pilings, and even the hulls of ships.

Care

In the aquarium, Tetraclita stalactifera can be an interesting addition to a reef tank, providing a touch of natural bio-diversity. They require strong water movement to mimic their natural environment, which helps them feed on plankton and detritus suspended in the water. They also need stable water parameters and clean, well-oxygenated water to thrive.

Reproduction

Tetraclita stalactifera reproduces through a process called 'broadcast spawning,' where males and females release sperm and eggs into the water column. Fertilization occurs externally, and the resulting larvae are planktonic before settling onto a suitable substrate to metamorphose into the adult form.

Symbiosis

While not known for any specific symbiotic relationships, barnacles in general play a role in the marine ecosystem as part of the fouling community, providing microhabitats for a variety of small marine organisms.

Habitat

Tetraclita stalactifera is typically found in the intertidal to shallow subtidal zones of tropical seas. They are often seen in large aggregations, which can be an impressive sight in their natural habitat.