They prefer to be in groups so they can hudle and commune, I found nothing on the group size but I would think 7-10 would suffice. The water should be shallow but deep enough for them to have some sort of caves under water to lay thier eggs in. Also, it seems that a cooler temperature for a time then warming can stimulate them to breed. I have not been able to find anything specific about the temperatures needed. Also, feeding live food and varying it as much as possible is supposed to help.
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