FIGURE 2 in Revision of Gymnotus (Gymnotiformes: Gymnotidae) from the Upper Madeira Basin of Bolivia and Peru, with descriptions of two new species

FIGURE 2. Principal components analysis (PCA) of 10 morphometric and eight meristic characters comparing G. mamiraua (blue) to G. eyra (red). Ellipses represent 95% confidence intervals. A. In the morphometric analysis comparing G. mamiraua (n=9), and G. eyra (n=17), principal component one is influenced strongly positively by body width (BW), head width (HW), body depth (BD), preorbital distance (PR) and postorbital distance (PO), while principal component two is influenced strongly negatively by head length (HL) and positively by head depth (HD). B. In the meristic analysis comparing G. mamiraua (n=9), and G. eyra (n=15), principal component one is influenced strongly negatively by the number of pored lateral-line scales before the first ventral ramus (PLR), the number of band pairs (BND) and the number of scales above the lateral line (SAL), while principal component two is influenced strongly negatively by the number of pectoral-fin rays (P1R) and influenced strongly positively by the number of anal-fin pterygiophore scales (APS).