Likely Reef Tank Suitable
Likely Fish-Only Tank Suitable
Range: South Florida, Bahamas and Caribbean.
Natural Environment: Inhabits shallow, warm bays and lagoons, where it may form large colonies or be mixed with seagrasses.
Aquarium Suitability: Prefers sandy bottom areas and intense light. Its upright stalks are short lived however, maybe lasting only a few weeks. Yet new growths will occur within a short distance of the main stalk via runners from the disintegrating central stalk. May grow up to a few inches per day and is a good water quality indicator. Similar to P. capitatus , but the stalk is shorter and the head larger and looser. Its also not as calcified.
Taxonomy:
Kingdom: Plantae
Phylum: Chlorophyta
Class: Ulvophyceae
Order: Bryopsidales
Family: Udoteaceae
Genus: Penicillus
FYI: Also called the Shaving Brush because it has a thick stalk crowned with a tuft of green to white filaments.