Lithophyllon concinna

This coral belongs to the family Fungiidae, a group known for producing free-living or solitary polyps in many species, though Lithophyllon concinna forms encrusting to laminar colonial growths rather than existing as a single mobile disc. Its skeleton forms flattened, plate-like structures with radiating septa visible across the colony surface. Like other scleractinian corals, it hosts symbiotic zooxanthellae within its tissues, which supply energy through photosynthesis while the coral itself captures plankton using its tentacles, primarily at night.

As a reef-building species, it contributes calcium carbonate structure to reef systems, offering habitat complexity that supports associated invertebrates and fish.

The species occupies shallow marine neritic waters and is recorded across a wide swath of the Indo-Pacific, including the United States, Australia, Thailand, Taiwan, China, and Japan, typically in reef environments where light penetration supports its photosynthetic symbionts.

Its listing as Endangered reflects a convergence of pressures. Fishing and harvesting activities, along with recreational use, physically damage colonies, while coastal development and other ecosystem modifications degrade surrounding reef habitat. Water quality is compromised by agricultural runoff, urban wastewater discharge, and solid waste pollution, all of which stress coral tissue and encourage disease.

Invasive species and native pest outbreaks compound these effects, and broader habitat shifts linked to climate change add further strain.

Conservation efforts affecting this species are largely embedded within broader coral reef protection frameworks, including marine protected areas, water quality regulation, and international trade oversight under CITES, since Fungiidae corals are commonly traded.

Population trends are currently decreasing, and given the combination of localized and widespread ongoing threats, the species' outlook remains concerning without stronger habitat and water quality safeguards across its range.