To be honest there is not alot of information about breeding them, this is about all I have found.This is copied from another site....
SEX: The female is less colorful and larger. The male is slimmer and has an elongated dorsal fin.
Breeding techniques: Difficult because of their aggressive behavior towards their own species. They are not bred often, although it has been in accomplished in peat filtered water with a pH of 6.8. Use dim light or no light. They spawn in rocky caves and fry hatch after 30 to 60 hours. The fry are free swimming after four days. Start feeding with small live foods. Their colors change from silvery to silvery brown, to brown and finally to black. The red tail develops after 7 to 10 weeks.
Breeding potential: 9. Breeding is very difficult and rare in captivity.