We need to increase the conc. of vit. A in the common carp pellets because signs related to insufficient amount of this vit. were noticed in the floating cages
Green leafy vegetables contain good percentage of carotene although its orange color is masked by green chlorophyll. So, it can be used as indirect source for vit A in diets. Another alternative may be oily vetrenary supplements but I have no idea about availability and prices in local markets.