FIGURE 16 in A new genus of armored catfish (Siluriformes: Loricariidae) from the Greater Amazon, with a review of the species and description of five new species

FIGURE 16 | Biplot of first and second Principal Components of morphometric proportions of standard length or head length in populations of Rhinotocinclus bristskii. Percent of variation included in PC1 is 23% and in PC2 is 17%. Head length and prepelvic distance loaded more strongly positively and head depth and interorbital distance loaded more strongly negatively on PC1. Head length and lower caudal-fin principal ray loaded more strongly positively and snout length loaded more strongly negatively on PC2.