I recently moved them to the living room tank which had no fish for a while.
Oh my wife was pissed. Such brown, ugly fish in the living room. I might have to buy another 150 gallon tank...
In addition, a while ago a friend brought me an adult sure female from the same breeder. It had a nice round body shape like females full of eggs should have.
Now the "female" and one of my fish dropped their tubes and I am not sure anymore about the bigger fish being a female. The white and black pattern also looks more male to me and it became way leaner.
I hope they spawn and I can observe it. I think thats the only way to figure out their true gender.