A colour-enhancing granulated food with a high protein content (50%), for everyday feeding of discus and other fish with high nutritional requirements. The high nutritional value makes D-50 PLUS GRANULAT a perfect food for egg-layer breeding stock and juvenile fish. Krill and squid are a source of easily-assimilable protein, rich in exogenous amino acids, and make the food very palatable. A high content of astaxanthin, from Haematococcus pluvialis among other sources, ensures intense and vivid colours. Beta-glucan, a natural immune stimulator, enhances immunity to disease. Fish that are regularly fed with D-50 PLUS GRANULAT are lively and healthy, and hence pair and spawn eagerly. We also recommend other Tropical foods for discus.