For arowana, oscars, goldfish, tetra, guppy, molly, barb, discus, cichlids etc., can be used on breeder fish very effectively. Accelerate natural fish color Strengthening health. Suitable for all kinds of fish use 1/2g with 100g food-flakes, pellets, live feed-daphnia, shrimp egg, shrimp meat, tubifex worm, etc.