Orange Cup Coral

About

The branching octopus coral (Tubastraea columnata) is one of the more unusual corals you'll encounter in the reef hobby, and it stands apart from most stony corals in a fundamental way: it contains no zooxanthellae, meaning it gets zero nutrition from light. Every calorie it needs has to come from direct feeding, which makes it more demanding than your typical LPS coral but also means you can keep it in spots where light never reaches. In the wild, this species is native to the Brazilian South Atlantic, where it colonizes shaded reef structures and overhangs. The colony grows in a branching, columnar form topped with polyps that open wide during feeding, showing off the bright orange coloration the group is known for. In an aquarium, consistent target feeding with meaty foods like mysis, copepods, or coral-specific preparations is non-negotiable. Skip a few feedings and it will decline quickly. Flow should be moderate. Enough to carry food particles past the polyps and keep waste moving, but not so turbulent that the polyps stay retracted. This is an intermediate-level coral, best suited to keepers who are already comfortable with regular coral feeding routines and want something genuinely different on the rockwork.