Richard Francis and his colleagues at the University of Oregon in Eugene and the University of Washington in Seattle studied a species of cichlid fish found in Lake Tanganyika. (newscientist.com)
«Evolutionary biologists observe parallel, repeated evolution of cichlid fish in Nicaragua.» (sciencedaily.com)
Amorim, M. C. P., Simões, J. M., Fonseca, P. J. & Turner, G. F. Species differences in courtship acoustic signals among five Lake Malawi cichlid species (Pseudotropheus spp.). (nature.com)