Fig. 1-S1
Rod photoreceptor density is increased during postembryonic growth of zebrafish but not medaka.
(A–B''') Cryosection of wild-type hatchling zebrafish and adult zebrafish retina. The ONL of the zebrafish retina is comprised of two nuclear layers, which contain only Zpr-1-positive (green) PRCs. The ONL of the adult zebrafish retina is comprised of four nuclear layers: one Zpr-1-positive (green) layer and three Recoverin-positive (magenta) layers. (C–D''') Cryosection of wild-type hatchling medaka and adult medaka retina. The ONL of the hatchling medaka retina is comprised of two nuclear layers: one Zpr-1-positive and one Recoverin-positive (magenta) layer. The ONL of the adult medaka retina is comprised of two nuclear layers: one Zpr-1-positive and one Recoverin-positive (magenta) layer. Scale bars are 20 μm.