Common name: Bubble Algae

General information

Valoniopsis pachynema, commonly known as Bubble Algae or Sailor's Eyeballs, is a species of green macroalgae that is often found in marine aquariums, either intentionally or as an invasive species. It is characterized by its distinctive, smooth, spherical growths that can range in size from a few millimeters to several centimeters in diameter. These green orbs are filled with water and can create a unique visual effect in the aquarium.

Care

Bubble Algae can be both a decorative addition and a nuisance in saltwater aquariums. It prefers areas with moderate lighting and some water flow. While it can help with nutrient export by absorbing nitrates and phosphates, it can also spread quickly and outcompete other desirable algae and corals for space and resources. Manual removal is often necessary to keep its growth in check. Care should be taken not to rupture the vesicles during removal, as this can release spores and exacerbate the problem.

Symbiosis

Valoniopsis pachynema does not have any known obligate symbiotic relationships in the aquarium setting. However, it can provide a microhabitat for small invertebrates and may be grazed upon by certain herbivorous fish and invertebrates that can help control its growth.

Habitat

In the wild, Valoniopsis pachynema is typically found in shallow, tropical marine environments attached to hard substrates such as rocks, coral rubble, or the shells of mollusks. It is distributed across the Indo-Pacific region.