Blue lyretail (Fundulopanchax gardneri), also known as steel-blue aphyosemion and Gardner's killi. It is a species of killifish that inhabits the tributary streams and marshes of the Benue and Cross River basins of Nigeria and Cameroon. It occurs in both savanna and forested regions. Like the lyretail panchax (Aphyosemion australe), it has become a popular species in aquariums. Breeding pairs of the blue lyretail most often lay their eggs over the bottom, but occasionally also among the roots of free-floating aquatic plants. Pairs stay close for some time, with just a few eggs being produced each day. The eggs take around two weeks to hatch.