Processing of these carp fish generates potentially large amount of by-products and waste from non-edible fish parts including skins which are discarded in the fish shop and fish-processing factories. These two carp species are sometimes handled together by fish shop/fish processors. Thus, the carp processing by-products (waste), which account one-third of the whole fish is utilized and poses a high level of disposal issues. The skin of these carp fish can be the potential sources for the extraction of