The increasing demand for fishery products in general may lead to deliberate adulteration along the food chain, due to the substitution of high-quality species with lower quality counterparts Although seafood labeling has to include the commercial designation, scientific name, geographical area, production method, as well as state whether the product has been previously frozen, the commercial fish species available on the market cannot always be easily identified in processed and prepared fishery products, especially when morphological features have been removed. In fact, prepared fishery products, i.e. unprocessed fishery products that have under-gone an operation affecting their anatomical wholeness, such as gutting, heading, slicing, filleting and chopping