Scale-eating cichlids: from hand(ed) to mouth
Systematics and Evolution Group, Department of Biological Sciences, University of Alberta, Edmonton, AB T6G 2E9, Canada
Journal of Biology 2010, 9:11 doi:10.1186/jbiol218Published: 24 February 2010
Two recent studies in BMC Biology and Evolution raise important questions about a textbook case of frequency-dependent selection in scale-eating cichlid fishes. They also suggest a fascinating new line of research testing the effects of handed behavior on morphological asymmetry.