FIGURE 8

FIGURE 8

Overview of caudal fin development in postembryonic stages of Melanotaenia praecox. (A–E′) Lateral views of early (A) or late (B,B′) phase of DF Stages 1, 2 (C,C′), 3 (D,D′), and 4 (E,E′). Bright field (A–E) and grayscale fluorescent (B′–E′) images. Yellow brackets in (A) indicate a clump (condensation) of mesenchymal cells. Asterisks indicate soft rays; arrows indicate procurrent rays. (F–H) Relationships between DF stage and number of soft rays (F), caudal dorsal procurrent rays (G), and caudal ventral procurrent rays (H). To reduce data overlap, all points in (F–H) are jittered along x and y axes. Schematic drawings in each graph (F–H) indicate the position of each type of fin ray. All scale bars: 200 μm.