Figure 1:

Photographs of dragonfish (Gymnodraco acuticeps) embryonic development stages during experiment. (a) Embryo undergoing gastrulation. (b) Early segmentation with no visible pigmentation, translucent appearance (pigment level = 0). (c) Primitive eyes become visible during early segmentation. (d) Onset of pigmentation during segmentation with diffuse, spotty pigments forming along outer edge of notochord (pigment level = 1). (e) Continued segmentation, with distinct lines of pigment along notochord, somite pigments visible, especially towards tail, and embryo is visible through chorion without magnification (pigment level = 2). (f) Embryo out of chorion during somitogenesis.