Fig. 1. A in Revision of the Astyanax orthodus species-group (Teleostei: Characidae) with descriptions of three new species

Fig. 1. A. Distribution of pigment in the humeral region of Astyanax species. B. A. bimaculatus (Linnaeus, 1758). C. A. caucanus (Steindachner, 1879). D. A. mexicanus (De Filippi, 1853). E. A. courensis Bertaco, Carvalho & Jerep, 2010 (modified from Bertaco et al. 2010). The anterior humeral spot consists of two overlapping layers of pigment identified by numbers 1 and 2 (see Román-Valencia et al. 2015: fig. 1): 1. Diffuse vertical bar. 2. Horizontal spot with concentrated pigments.