I wouldn't do it personally but I guess if you put a pair of convicts in there they would start breeding and provide a nice source of live food for him. Some fry would survive and start breeding too but eventually they would all get munched even the original pair.
I think you will be rewarded for your patience eventually if you keep him solo and will end up with a nice big fish in a tank that doesn't look so big all of a sudden.
I think you will be rewarded for your patience eventually if you keep him solo and will end up with a nice big fish in a tank that doesn't look so big all of a sudden.