Whether a Discus display tank needs any other fishes at all should be carefully considered, because not too many other species do well with Discus.

Angels will certainly not do, as these predatory eaters snap up much of the food intended for the Discus and also introduce parasites. If you really want to keep other fishes in company with your Discus you should concentrate on a school of Amazon tetras such as Glowlight Tetras, Cardinal Tetras, Rummy-nose Tetras, Black Neon Tetras, Ornate Tetras, Rosy Tetras, Serpae Tetras or Neon Tetras.

As all these species are schooling fishes and are seen at their best only in quantity, at least ten should be kept together in a group. In large tanks, a pair of Rams, which are of course particularly peaceful, can accompany the Discus. The focus of the tank, however, should always be the Discus themselves.