King British Catfish Pellet Food King British Catfish Pellet Food – A sinking complete food for all types of Catfish and other algae eaters. It is high in protein at 50% and also has a high oil content of 15%, as required by most catfish. The food is also in the form of 1-2 mm dark green pellets. Complete diet for all types of Catfish and also other algae eaters. Highly digestible / low waste formula High protein sinking pellet King British’s heritage of sourcing ornamental fish from around the world has given a unique insight into natural habitat, behaviour, feeding patterns & also nutritional requirements of fish, forming the basis for the scientific development of King British super premium fish foods, treats, water treatments and also fish medicines.