Possibly. More likely for it to do so then a "real" Geophagus. "G." brasiliensis is more similar and probably more closely related to CA cichlids then it is to any Geophaginae. And as you probably know, nothing unusual for even large CA to be sexually mature at 3" sometimes in captivity. Brasiliensis is likely one of those fishes (such as Thorichthys or Astatoheros species for example), that can superficially resemble a Geophagus because it makes it's living in a similar manner but is really not that closely related to any Geophaginae.DirtyBlackSocks said:Would a male juvie already be venting and developing a hump at 3", though?