I just ordered 10 RCS. I'd like to put them in my 10 gallon with the dwarf puffers, it's heavily planted enough that I think they'd be ok. But in case they're not, I was thinking about putting some of them in the 5 gallon to breed, so I'd have some more. Or just keep them in the 5 til they're full grown, and add adults only to the 10 gallon, leaving some left to breed. Can you easily tell male from female? Anything specific I'd have to do to get them to breed? And how long does it take for them to reproduce?