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Studying their cousins behaviors, I cant imagine how they would survive an AP system, let alone a n even more crowded. RAS..
This would leave me thinking that IF they did manage to mate, then that would mean a small number of eggs and even then when they were released a. Smaller survival rate, because of no hiding places.
I could see it happening in an IBC, where a sheltered corner could form the mating nest..
I would experiment and see if you could have a heavy plastic structure that could provide shelter from the circulating current, where they could do their thing..
A weekly inspection with air and current off, could show up fish "holding", and you could try netting these and stripping the eggs..
Holding fish, tend to keep away from the others if they can and appear to be pouting..
I would think it may be a challenge, spotting them in a school..
One day I may find out just how difficult it really is to breed the blighters, but my initial thinking is that I would have a male and two females in an lounge room aquarium... exactly as Brian has shown.. good depiction Brian
PS... to try and identify a truely holding fish, throw some food in.. the holder may instinctively move on the food, but will not open her mouth to eat .. and I am assuming that Tilapia are no different to other Cichllids..
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