CoralSaltwaterIntermediate

Crust Coral

Leptastrea inaequalis

A tough, encrusting coral with vivid green and yellow calices across a wide reef range.

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About

Crust coral (Leptastrea inaequalis) is a compact, encrusting species with a wide natural range stretching from the Persian Gulf and Red Sea all the way out to Hawaii and down to Australia. Making it one of the more broadly distributed leptastreans in the Indo-Pacific. In the wild it turns up across a surprisingly broad range of reef environments, from shallow sunlit flats down to around 40 meters, which hints at a certain adaptability that carries over into the aquarium. Colonies grow in a massive, plocoid form, meaning the individual corallites sit side by side but remain distinct, each a small barrel-shaped cup rarely exceeding 3 mm across. Deep grooves separate neighboring corallites, giving the surface a textured, almost quilted look that becomes more obvious up close. Coloration tends toward combinations of cream, green, and yellow, with the individual calices often shaded darker than the surrounding tissue. A subtle contrast that rewards a closer look. The septa inside each corallite are arranged in two cycles of unequal size, with wedge-shaped primary septa that are characteristic of the genus. In the aquarium, this coral is generally considered an intermediate-level keeper, doing best under high light and moderate flow. It is reef safe and poses little risk to neighbors when given adequate space.

At a glance

Type: Coral
Water: Saltwater
Origin: Indo-Pacific: Persian Gulf to Australia and Red Sea to Hawaii.
Reef safe: Yes
Lighting: High
Flow: moderate

Care guide

Position Leptastrea inaequalis in high-light areas of your reef, ideally under quality LED or halide lighting. Provide moderate, consistent water flow to prevent detritus settling in the textured corallite grooves, where trapped material can cause tissue necrosis. Feed occasionally with small particulate foods like phytoplankton or coral powder during low-flow periods, though most nutrition comes from photosynthesis. Maintain stable water parameters and avoid sudden changes, which stress this coral more than some hardier species. Space colonies with breathing room to prevent aggression and allow polyp extension.

Breeding

Leptastrea inaequalis reproduces via broadcast spawning in nature but captive breeding data is minimal. Fragging is possible but difficult due to the tightly fused polyp structure; success rates are low and recovery is slow. Cutting into living tissue risks infection and tissue death across the colony. If attempting propagation, use a diamond saw with minimal pressure and immediately treat cut surfaces with iodine or epoxy. Most hobbyists simply allow colonies to grow naturally rather than fragment.