I am considering getting some n class orchid endlers in the future and placing them in a 10 gallon for themselves. I was wondering if a pair or trio of them would be a good enough to start a small colony and not need to add new blood at all (considering if I cull any deformed looking fry)? I heard that if you start off with quality stock and cull off any weak offspring then there would be no need to add new individuals. I was also thinking about letting the females get pregnant then moving them to a separate unheated 5-10 gallon tank where they will give birth ( If it turns out they require a heater I'll get one). . Any fry that turn out to be male will be placed in the heated 10 gallon tank before they have the chance to mate. Bottom line is I only want the females to mate once and live out their live out the rest of their lives along with their virgin daughters in a separate tank from the boys. When I need more fry to start a new generation or when the end of their lifespan is near( I think it'll only be a yearly thing though), ill just bring two of the offspring together but I want them separated for the most part. By the way, how would I sex the young males and females before they become sexually mature? endlercollector Can you give me your opinion on this? Any other input or advice from endler pros out there would be greatly appreciated too!