I think we may be on to something. HAD to take him out of the P Bass tank! He was chasing them around and nipping at them and it's only been an hour so he's now with the Texas:Sal-Veija:JacD war! I hope they don't do him to bad.... will keep all updated.
So if this is a male I may have figured out a pretty positve way to determine the sex and under 4''.
I always like Female Dovii more than the males. I love the yellow and black coloration with blue fins. Males are still awesome but I would rather have myself a nice female. You have a male now by the way.