Video supplement to Figure 2. In vivo view of the intact cone photoreceptor layer; UV cones are labeled in GFP. The crystalline structure of the adult cone row mosaic, the larval mosaic, and occasional gaps in the row mosaic are included. Streaks where cones are out of focus are caused by vessels obscuring fluorescence. n=2 fish shown. To access the data, click or select the words “Appendix 1.”