What I have noticed is that the vast majority of the eggs will be laid in the bottom mop. These fish seem to be cyclical breeder. I will recover 10 o 20 eggs per day from two pairs for up to 6 days. Then there will not be any more eggs for a period of 4 to 8 days and then the breeding will start anew for another 4 to 6 days. Feeding during this time has not changed , nor has any other outside stimuli.
Predation seems to be at a minium.
I don't know wether to contribute that to good feedings or lack of interest on the part of the fish. I haven't noticed any seasonal tendencies to breeding. That may because of the extreme southern range of this fish. The eggs are rather large, in the 2 mm range, and are removed from the mop every other day. I use to remove the eggs everyday, fearing egg eating by the parents, but found no difference in the amount of eggs with either method.