What do you know about them? It's just a scalare with a different name or it could be a altum?
Picture source: http://www.kijiji.it/annunci/altri-...terophyllum-altum-peruensis-3-3-5-cm/37996585
Picture source: http://www.kijiji.it/annunci/altri-...terophyllum-altum-peruensis-3-3-5-cm/37996585