Figure 4 in Comparative osteology of the Danio (Cyprinidae: Ostariophysi) axial skeleton with comments on Danio relationships based on molecules and morphology

Figure 4. Variation in the supraneurals. A, Opsariichthys unicirostris (MCZ 32375); B, D. quangbinhensis (AMNH 227913); C, D. malabaricus (MCZ 52399); and D, D. pulcher (CU 77840). Arrow 1 shows the fusion of the anterior margin of the supraneural seen in all danios (B) relative to the outgroup Opsariichthys (A). Arrow 2 indicates the bowl shaped depression (C) in the dorsal surface of the supraneural as seen in D. alabaricus, D. pathirana and D. regina. Arrow 3 indicates the fused, thin dorsal margin of the second supraneural (D) characteristic of D. kerri, D. pulcher and D. rerio. Arrow 4 indicates the saddle-like medial ridge of the anterior supraneural as seen in D. kerri and D. pulcher. Arrow 5 points out the medial curving of the anterior supraneural (B) as seen in D. quangbinhensis and D. aequipinnatus. Scale bar = 0.5 mm.