Surviving fishes with varying degrees of caudal fin deformation by P. fluorescens in G2 group (a, b) treated with B. aerius AsCh-A7 and muscle degeneration by P. fluorescens in positive control C3 (c) and experimental groups G2b, G3b (d, e) treated with Sphingomonas sp. AsCh-P3 and B. aerius AsCh-A7, respectively.