I completely agree with you that's why I was very confused when they were mating in the corner. I could not see if she was actually picking up eggs or it was just a mock display but they were circling, tail shaking and picking somethingup with her mouth. Also I want to be clear I am not trying to breed them. I just walked by the tank earlier and saw them doing the dance.With no experimental data to back this up, I would think that the genus separation and the fact that both are from 2 different lakes makes successful breeding pretty unlikely.