Common name: Mermaid's Wine Glass

General information

Penicillus dumetosus, commonly known as the Mermaid's Wine Glass or Green Felt Algae, is a distinctive species of algae found in the marine aquarium hobby. It belongs to the family Udoteaceae and is notable for its unique, goblet-shaped structure that resembles a wine glass. This calcareous green macroalgae is not only aesthetically pleasing but also serves an important role in nutrient export and tank health by absorbing excess nutrients like nitrates and phosphates.

Care

Caring for Penicillus dumetosus requires a stable marine aquarium with adequate lighting and water flow. It thrives in environments with moderate to high lighting, which supports its photosynthetic needs. While it can tolerate a range of water conditions, maintaining stable parameters is crucial for its growth. It is recommended to keep the alkalinity levels consistent to support its calcareous structure. Regular pruning may be necessary to manage its size and shape, as well as to prevent it from overshadowing other inhabitants.

Symbiosis

While Penicillus dumetosus does not have the same type of symbiotic relationships as some corals or anemones, it does provide a microhabitat for small invertebrates and can contribute to the overall biodiversity of the aquarium. Its structure offers shelter and feeding grounds for tiny organisms, which in turn can become part of the natural food chain within the tank.

Habitat

Penicillus dumetosus is native to shallow, tropical marine environments, often found in seagrass beds and sandy substrates. It is distributed across the Caribbean Sea and the Gulf of Mexico. In the wild, it is adapted to high light conditions and can be found at various depths where it forms part of the complex benthic community.