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Yes, it might be A. viejita. I'd like to see more photos with the dorsal fin raised and the male in threat display before I was positive. The lateral band seems just a bit wide for A. viejita and the caudal spot is slightly different, too. These might just be population variations, however. There are photos of males that show mixed mac/viejita characteristics from the wild. So it's possible that it could be one of these, too. I must admit it doesn't look like a typical A. macmasteri.