hello again,
I found two fish with beautiful red fins, and took them with me.
Big interest from the females.
The big female is still chasing the smaller one, but I will separate it and watch carefully what happens.
Seems to me my dominant Sajica is an a**hole... she doesn´t like ANY fish.
Taken her out now.
New colouration of the smaller female:

colour of the new ones, who look both the same:
The female is in the background:
Are these ones finally males?
Should I look for even more females or just let her choose on of the two "boys"?
The red they are I would not suggest they are female.
And they don´t have the black lining on top of the dorsal fin...
They are still pretty small, maybe 3cm... she might be 4cm...
Right now something very weird happens...
She somehow flashes with her T- bar when she comes near them...
So first she lets it fade and then it comes back in a strong black colour... but only the vertical part... the males only have the vertical bar shown right now...
Is that a flirt? Or just social behaviour of these fish?
She doesn´t attack them, ignores them pretty much...
she only does this bar- thing... and her head turns dark when one of them appears...