Corematodus shiranus
Photo: Wikimedia Commons (CC) via https://en.wikipedia.org/wiki/Corematodus_shiranus
Overview
Corematodus shiranus is a species of haplochromine cichlid fish native to Lake Malawi, Lake Malombe and the upper reaches of the Shire River in East Africa. It is an aggressive mimic of the chambo cichlids in both color pattern and swimming mode. It is therefore able to approach unsuspecting schools of these species and rapidly take a mouthful of scales or fin.
Due to overfishing, the chambo cichlid populations have drastically declined, adversely affecting C. shiranus, which was last reported in 1997 and might now be extinct.
Corematodus shiranus faces severe threats from habitat degradation in Lake Malawi due to increased sedimentation from agricultural runoff and deforestation in the catchment area. Overfishing and the use of destructive fishing methods, including fine-mesh nets and beach seining, have significantly reduced population numbers. The species' restricted range within specific rocky habitats makes it particularly vulnerable to localized environmental changes and human disturbances.
Habitat
Corematodus shiranus inhabits the rocky shores and intermediate depths of Lake Malawi, typically found among boulder fields and rocky substrates. The species prefers areas with clear water and stable rock formations that provide shelter and feeding opportunities in the lake's endemic cichlid community.
