Acropora spicifera

Acropora spicifera is a stony coral belonging to the family Acroporidae, recognized for its branching, staghorn-like growth form typical of the genus. Colonies are formed by colonial polyps that secrete calcium carbonate skeletons, building complex three-dimensional structures that provide shelter and habitat for reef fish, invertebrates, and other marine organisms. Like other Acropora species, it relies on symbiotic algae (zooxanthellae) for energy through photosynthesis, and its rapid growth rate makes it an important contributor to reef framework building and structural complexity.

This species inhabits shallow marine neritic waters across the Indo-Pacific, with recorded populations in Australia, Mauritius, the Maldives, Thailand, Vietnam, Taiwan, and Palau. It typically occurs on reef slopes and flats where light penetration supports its symbiotic algae.

The species faces numerous ongoing pressures, including fishing and harvesting activities, recreational reef use, and habitat disturbance from storms and flooding. Water quality is degraded by domestic and urban wastewater, agricultural runoff, and effluents from non-timber crop production, which contribute to nutrient loading and pollution. Invasive species and coral disease outbreaks add further stress, compounding the effects of broader habitat alteration linked to coastal development and climate-driven changes.

Conservation efforts for Acropora corals generally include marine protected area designations, water quality regulation, coral restoration and propagation programs, and monitoring of reef health across its range countries. Enforcement of fishing regulations and reduction of land-based pollution sources are also components of regional reef management strategies.

Population trends for this species are decreasing, and it is currently classified as Endangered. Given the combination of chronic water quality issues and acute disturbance events, its long-term outlook remains concerning without sustained intervention.