Fig. 1From: The gut bacterial microbiome of Nile tilapia (Oreochromis niloticus) from lakes across an altitudinal gradientAlpha diversity indices based on sampling lakes. (A) Observed index (B) Chao1 index (C) ACE index (D) Shannon index. Independent t- tests was employed to examine the differences between lakes. The significance is shown by small letters a, b, and c. Boxes with different letters show significant differences (p<0.05)]Back to article page