Brush Coral

About

Brush coral (Acropora hyacinthus) is one of the classic table-forming Acropora species, building broad, flat plate structures that can stack into tiered arrangements as a colony matures. In calmer conditions the branchlets are fine and delicate, projecting upward in a lacy pattern, but where surge and wave action are stronger, those same branchlets fuse together into a denser, more robust surface. A fascinating example of how a single species can look quite different depending on where it grew up. The radial corallites arrange themselves into small rosette clusters, giving the surface a distinctive texture under close inspection. Coloration tends toward the understated side: cream, brown, grey, and green are all common, sometimes with a blue or violet tint along the growing margins that can shift to pink in photographs. In the wild this species occupies upper reef slopes and outer reef flats, habitats that receive intense light and strong, consistent water movement. That background makes the aquarium requirements fairly predictable. This is a coral that demands serious lighting and vigorous flow, and it does not forgive lapses in water quality. It is firmly in the advanced category, better suited to a well-established, stable reef system than a newer setup still finding its footing.