Thanks homer, both for the info and the comments on the frog.
I think it is a female, but not sure on the other one, the other is very shy and I rarely see it.
I have 2 more that also might be a pair, but the smaller of that set has been in quarantine for months with ups and downs along the way. Still kicking, but not sure one day its fat the next its not. So every time I think I'm ready to put it back in the larger tank I can't. Been thinking about putting them all together, but haven't yet.