Magic Traits in Magic Fish: Understanding Color Pattern Evolution Using Reef Fish

Color patterns provide easy access to phenotypic diversity and allow the questioning of the adaptive value of traits or the constraints acting on phenotypic evolution. Reef fish offer a unique opportunity to address such questions because they are ecologically and phylogenetically diverse and have the largest variety of pigment cell types known in vertebrates. In addition to recent development of their genetic resources, reef fish also constitute experimental models that allow the discrimination of ecological, developmental, and evolutionary processes at work. Here, we emphasize how the study of color patterns in reef fish can be integrated in an Eco/Evo/Devo (ecological evolutionary developmental) perspective and we illustrate that such an approach can bring new insights on the evolution of complex phenotypes.