Barbus pentazona is quite a sensitive fish, easily stressed. Very attractive, and without the issues associated with Tiger Barbs which it superficially resembles. Will not tolerate poor water conditions, much more sensitive then TB's.
Once established, (they travel badly), they are easy enough to keep providing the water quality is maintained. They eat well and are not difficult to breed.
There are four recognised sub species. Barbus pentazona pentazona has 4 stripes, B. p. partipentazona has 4½ stripes, an incomplete stripe under the dorsal fin, B.p. hexazona has 5 stripes and the jewel, B. p. rhombocellatus which has 4 stripes which break in two part way and rejoin lower giving the fish a "row of diamonds".
The various subspecies will spawn with each other and produce highly variable results - mostly resembling B. p. partipentazona.