Does anyone have any knowledge of their breeding habits......i bought a pair from my lfs for 20bucks....i have them in a tank divided between them and my red belly piranha......they had 2 tanks full of swimmers from them so how long should it be before i expect some babies.....also do i need anything special besides a smooth rock like most other cichlids for them to lay eggs.......they are on a diet of beefheart supermix....any suggestions would be great