Geophagus altifrons is the hobby "surinamensis" and according to Paul V. Loiselle, the true Geo. surinamensis is very rare and hardly ever been available in the hobby.
thats what i thought but i have caught them showing the big spot on occassion and i cant find a pic of juvie altilfrons showing this. I would love them be something great as paid very little for them. got go now to big als and work but please keep helping.