A pair would do great. Probably would want a trio so that one female doesn't get picked on too much when breeding. I'm not aware of anyone In Portugal breeding rays. I'd look to importing if you want to ensure that you get quality rays.The tank i will try to build a 6x5x2 and i'm asking if theres ok for 2 Leopoldi's and how can i get to of these or two P14's I'm from Portugal and i live in Algarve.