Coptodon flavus

Coptodon flavus is a cichlid fish restricted to a small range within West Africa's freshwater ecosystems, where it inhabits shallow lake and river margins characterized by warm, slow-moving waters. Like many cichlids of the genus Coptodon, it likely displays the group's characteristic laterally compressed body, terminal mouth adapted for algae and detritus feeding, and the parental mouthbrooding behavior that defines much of this lineage's reproductive strategy. The species is classified as Critically Endangered (CR) by the IUCN Red List, reflecting severe pressures on its highly restricted habitat.

Populations are believed to be under threat primarily from habitat degradation linked to water extraction, pollution from agricultural runoff, and sedimentation, all of which reduce water quality and disrupt spawning grounds in its limited native range. Competition and hybridization with introduced or non-native tilapiine species further compound the risk, as does unregulated artisanal fishing in areas where local communities depend on lake and river resources for subsistence. Because Coptodon flavus occupies such a confined geographic area, any localized environmental disturbance carries disproportionate consequences for the species' survival, a common vulnerability among narrow-range African cichlids.

Conservation attention for restricted-range cichlids in the region has increased in recent years, with regional freshwater biodiversity assessments and watershed protection initiatives beginning to include lesser-known endemic fish species in monitoring frameworks. Encouragingly, growing recognition of West Africa's freshwater biodiversity hotspots has spurred interest from regional conservation bodies in cataloguing and protecting narrow-endemic fish like this one, offering a foundation for future targeted action. Continued field surveys and habitat protection measures will be essential to clarify population trends, currently listed as unknown, and to secure the long-term persistence of this Critically Endangered species within its native waters.

Coptodon flavus inhabits freshwater rivers, streams, and associated wetlands in West Africa, preferring areas with moderate water flow and rocky or sandy substrates. The species is typically found in shallow to moderately deep waters with abundant aquatic vegetation that provides both feeding opportunities and spawning sites.