Thrive Ocean Fish is complete therefore can be fed on its own or mixed in with our Thrive Premium Plus dry food depending on your cats preference. Made with Mackerel, Whitebait & Shrimp the only sources of protein. Thrive Ocean Fish is cooked in a fish broth with added vitamins and minerals to give your cat a complete nutritionally balanced meal. This is real, pure mackerel, whitebait & shrimp, not "meat/animal derivatives". Complete. Wheat/gluten free. Easy to digest. No preservatives. No fillers or artificial gelling agents. No added colours. No added sugars. No artificial flavours.