Hi Helene,
This is Great news!!!
I as you will remember got seven of these fishes from you at the Hamburg meeting and keep them in a 20 l tank. There Clearly was a pair but the five others Were not yet old enough for clear determination. I Now think that almost all of them are males. The pair shows occasional mating like behaviour but i could not find them spawning yet. Probably they are also not yet completely mature. Sally one of the youngsters died only a week after i got them. Maybe the Journey had been a bit too stressful for him. It had stopped eating two days After they arrived…
Good luck to you and your beautiful fish, Helene!