Despite the relatively uniform water chemistry of its various habitats, the harlequin rasbora is an adaptable fish in the aquarium, provided that migration of the fishes to waters of differing chemical parameters is conducted with due care.
Feeding the harlequin rasbora presents no problems to the aquarist, as the fish enthusiastically accepts prepared foods, though for best health, a variety of these should be given, preferably interspersed with feedings of live foods such as Daphnia.