I have four of these in a 55 gallon. These originate from Guyana. It's not very clear in the photos, but they have beautiful red spots on the 'shoulder' and going up the front part of the dorsal fin.
I was looking those ones over when I was looking for some Angels...passed them up because of their size as the rest of my tank is young/small. Excited someone on these forums picked them up so they can post pictures