Fig. 3

Morphospace occupation of 259 analysed ariid individuals (28 species) and 11 freshwater outgroup specimens of the genus Doraops (Doradidae) along principal component axes one and two. Specimens are highlighted by (a) habitat and (b) genus. Convex hulls highlight the margins each group occupies in morphospace. c Screeplot of principal components. The biggest variance is covered by the first two PCs, which account for 56.7% of the observed variation