Scale-eating cichlids: From hand(ed) to mouth

Abstract

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. See research article http://www.biomedcentral.com/1741-7007/8/8. © 2010 BioMed Central Ltd.