Thanks all for you nice comments.
I´m still waiting the papers of the aro and will post info on the colour and type if its in there. I thinks I saw a note with the fish in the store that sayed Red tail yellow fin but I´m not sure.
For those of you who still want to discuss the colour here is another photo of the aro. I just want to point out that there is a lot of plants in the tank so the fish lookes green.
Yesterday I added a discus pair that did not seem happy in their breeding tank.
It looks like they like the aro tank but stress bars still show today.