Tetra Prima Mini Granules. Prima Mini Granules is a slow sinking food for small mid water and bottom feeding fish. Ideal for Tetras, small Barbs, Corydoras, Catfish and small Loach etc. Slow sinking granules. Mixture of herbivore and omnivore granules, to cater for the different dietry needs of fish in a mixed community aquarium. Contains 'Active Formula', which reduces stress and improves resistance to disease. Produced using Tetra's unique extrusion process, making them highly palatable and digestible for less fish waste.