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Black sun coral (Tubastraea micranthus)
AI illustration, not an ID reference

Black sun coral

Tubastraea micranthus

CoralsSaltwater

Care level
Demanding
Maximum size
40 cm
Temperature
24–27 °C
pH
8–8.4
Light
Low
Flow
Medium
Diet
Carnivore

Care at a glance

The black sun coral is a close relative of the (orange) sun coral and, like that species, an azooxanthellate coral without symbiotic algae — meaning it lives entirely on captured food rather than light. Unlike the sun coral's compact, knobbly clusters, this species grows into a large, dark, tree-like branching colony.

The feeding-intensive care is similar to the sun coral's — every polyp wants to be fed individually, a few times a week — but plan for its eventual size: this coral keeps growing to a substantial scale and so needs far more room over time than its smaller cousin.

Good to know

  • Hard to wean onto dry food
  • Active at night
  • Outgrows most home tanks

Related species

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Values are mainstream hobbyist guidance, not gospel — always watch what your own animals need.