Tellin yaz dude...its NOT an atabapo....90% sure its a xingu II...probably a female...i gave you a link for what atabapos look like....i have three right now and they look NOTHING like this beaut...trust me.
saw this guy at the lfs where i just got a job and want an id on him. Has a bright red/orange color to it and has a dark marking that runs from the bottom of its eye down at a diagonal. The picks were taken with my camera phone so they suck but I'll try to get a better pic. Fish is about 6-7" and also has slight vertical bands on the top of its back.