The Boesmani Rainbowfish is one of the most colourful of the rainbowfish family and is also one of the most commonly seen in shops. When young the fish are a dull silver-grey colour with hints of adult colour and darker markings around the centre of the body. The full colour will only develop once the fish is well established in a good aquarium environment. In common with many other rainbowfish, the Boesmani is a hardy fish that will tolerate a wide variety of aquarium conditions. Boesmani's are best kept in medium to hard water and can be adapted to low salinity brackish water. Mixes well with other active open water swimmers such as barbs, larger tetras, and bottom dwelling fish. The large size and active nature of the Boesmani may make small, timid fish nervous unless there are plenty of hiding spots present. A well recommended aquarium fish.