The water chemistry preferred by these fishes, as might be inferred readily from that of the wild habitat, is soft, acidic water (hardness no higher than 6° dH and pH around 6.4–7.0 is preferred). However, for maintenance purposes the pH of the aquarium water can range from 5.6 to 7.4. However, if captive reproduction is to be attempted, the rummy-nose tetra "needs" soft, acidic water. A planted aquarium is welcomed by these fishes, particularly if the plants include fine-leaved species such as "Cabomba" and "Myriophyllum".