Fig. 1

Comparison of alpha diversity values between habitats and host fish species. Faith’s phylogenetic diversity and Shannon diversity index for skin mucus (S), gill mucus (G) and water communities (W) (A, B) and within host fish species for gill mucus (C, D) and skin mucus (E, F). Significant (a) and non-significant (b) differences between tissue are indicated (Conover-Iman test (post hoc test), p < alpha/2 = 0.025). Significant and non-significant differences in skin and gill mucus diversity between fish species are available in Additional file 1: Table S4