Clownfishes and sea anemones mutualism, and geographic distribution. Illustration of the mutualistic relationship between Amphiprion chrysopterus and Heteractis crispa(A). The distribution of the damselfishes in blue and of the clownfishes in orange is shown in panel B. As for every clownfish species, the female Amphiprion percula (on top of the picture of panel C, here with Stichodactyla gigantea) is bigger than the male beneath.
Litsios et al. BMC Evolutionary Biology 2012 12:212 doi:10.1186/1471-2148-12-212