I have had my 6 for about 4 months now, and was wondering what I can do to encourage them to reproduce. I dont have any gravel in the tank, but I do have a plant in a dish that has gravel. Before I took them from a friend (who is very inexperienced), he says they may have reproduced once when he had them. He had a gravel bottom. None of the fry survived.
For a long time the fish were very timid, but now they have definitely became physically larger, their appetite improved, and they seem more active.
Thanks for the advice, as always.