Fig. 1

Representative photomicrographs of the intestinal and liver tissue in hybrid fish fed carnivorous and herbivorous diets. Intestinal tissue from fish fed carnivorous diet a herbivorous diet b. Liver tissue from fish fed carnivorous diet herbivorous diet, stained with H&E c and d and Oil red O e and f. The green arrow shows the intestinal villi, the black arrow shows the hepatocytes nucleus, and the red arrow shows the fat cells and lipid droplets