Hi Dorothee,
Yes I see, today they have already showed themselves in the front of the tank and they ate artemia naupliae.
There is one thing that surprises me: I always see two of them together. But somehow I never see the third one. The two seem to have plenty of fun… I am not sure bur I think one of the two is the male. They are still rather small, I think the males coloration will get stronger as time goes by. Is it possible that I dont see the third one? Do paros make pairs of two like cichlids? Or why do they always show in pairs of two?