p. diffusa X cherry barb

90%
Cherry barbs are one of the more calmer barbs and should leave P. diffusa alone. There is risk of cherry barbs munching on antenna, but it is not common for this to happen. Both animals should be kept in a temperature in the 75-78F range. P. diffusa may become less active in lower temperatures, so the higher range is recommended. With pH, both can be kept in a stable 7.0-8.0ppm range. The cherry barb can handle a pH as low as 6.0, but P. diffusa needs at least 7.0 or its shell will "melt". To keep these two together, a 15g standard should do well for beginners.