Figure 4: Dietary niche partitioning within and among individual samples ofCampylomormyrus and its sister genus Gnathomemus by nMDS of RRA-based Bray–Curtis dissimilarity indices of samples on the order level (adonis: comparison across EOD phenotypes F = 5.34, R2 = 0.182, p ≤ .002; across snout phenotypes F = 2.50, R2 = 0.179, p ≤ .002). The symbols represent the species and the colors represent snout length. The shaded convex hulls indicate short vs. long EOD. The stress level of 0.152 is under the cut-off value of 0.2 as recommended by Clarke (1993) to indicate an interpretable ordination.