Breeding dovii is pretty easy. I do it on a regular basis. I basically manipulate water conditions slightly and they do the rest. A simple increase in temperature and increase in partial water changes seems to condition mine to breed. I also mix the diet up from Hikari pellets, to frozen krill, live red worms, and that is honestly all I do. I give them caves/flat stones to spawn on and bang, one day I wake up with 400 eggs and two very mad parents. Mine are probably male length 11" and female is probably about 6.5" now. They are ok parents, not terribly aggressive if you put your hand in the tank but will attack glass/gravel cleaners. I hope as they get larger they get more aggressive.