Generally the Barbs belong to the Barbus and Puntius family. Most species are suited to a temperature of 18 – 26° C, and a pH of 6.5 – 7.5 with a general hardness of 50 – 150ppm. Barbs are a hardy, active and a fairly peaceful fish, that are best kept in groups in a community tank. Barbs can be known to nip. So it's best not to keep them with long finned or small slower moving fish. The fin nipping tendency will be lessened if you have enough fish in the school.