Fig. 3

Dominant taxa in tank water are established by two to three weeks post-population. Stacked bar charts showing the progression in microbiome composition in six tanks (A through F), sampled at 12 time-points (4 replicates/time-point) (A) and the pre-existing tanks from which fish originated; ASV = amplicon sequence variant, Aer = Aeromonas, Cet = Cetobacterium, Ch = Chitinophagales, Cut = Cutibacterium, Nov = Novosphigobium, Per = Perlucidibaca, Pl = Plesiomonas, Ru = Runella, Sap = Saprospiraceae, Sta = Staphylococcus, Vib = Vibrio (B). Principal coordinate analysis plots based on Bray–Curtis (C) and Jaccard (D) similarities. TP = time-point, color-bar legend at bottom; taxonomic abbreviations listed at beginning of manuscript. p and F values associated with main effect of time based on one-way permutation multivariate analysis of variance (PERMANOVA)