Figure 5 Ontogeny of sws1 opsin gene expression in damselfish species with two paralogs. The two SWS1 copies are classified as short- and long-wavelength shifted based on Fig. 3. A. akindynos and N. melas transition from expressing both copies at the larval stage to only expressing sws1β at later stages. On the contrary, most Pomacentrus species primarily express sws1α at the larval stage, shifting towards a more balanced expression of the two sws1s in later stages.