Fig. 4.

A multi-stacked histogram plot was generated to illustrate the relative abundances of microbial diversity up to the class and genus level. a The plot depicted the distribution of the most abundant class distribution in gut samples, where Gammaproteobacteria accounted for 97.4% in site-α and 98.5% in site-β. Water samples in site-α exhibited the highest abundance of Bacteroidia (60.5%), followed by Gammaproteobacteria (24.2%) and Alphaproteobacteria (6.9%). In site-β water samples, Gammaproteobacteria (81.1%), Alphaproteobacteria (4.6%), and Bacteroidia (4.4%) were the enriched classes; b Multi-stacked histogram plot representing relative abundance at genus level. In the fish gut of site-α, the most abundant genera were Aeromonas (36.6%), Escherichia-Shigella (35.9%), and Vibrio (6.1%). In site-β, the dominant genera in the fish gut were Aeromonas (31.9%), Enterobacter (20.1%), and Plesiomonas (2.6%). Water samples from site-α showed an enrichment of Flavobacterium (58.6%), Limnohabitans (10.1%), and Pseudorhodobacter (4.6%). On the other hand, water samples from site-β comprised Limnohabitans (5.9%) Luteolibacter (2.5%), and Flavobacterium (1.1%)