Dwarf Cup Coral

About

Dwarf Cup Coral (Astrangia solitaria) is a compact, non-zooxanthellate coral native to the Western Atlantic, where it can be found from shallow coastal waters down to around 50 meters. Unlike the photosynthetic corals that dominate most reef aquariums, this species does not rely on symbiotic algae for nutrition, which gives it a different set of requirements in captivity. It needs to be fed directly and consistently. Meaty foods and small particulate matter are essential to keep it healthy long-term. That feeding dependency is the main reason it carries an intermediate care rating, and it suits keepers who already have a handle on target feeding and nutrient management. In the wild it inhabits subtropical zones, which hints at its tolerance for slightly cooler and more variable conditions than typical reef species. Each polyp grows as a distinct, cup-shaped structure, giving the coral a clean, sculptural look that sits nicely on rockwork. It is reef safe and won't bother neighbors, but because it depends entirely on the keeper for nutrition rather than your lighting doing the heavy lifting, it tends to work best for those who enjoy an attentive, hands-on approach to their tank.