It's not a surinamensis, you can blame the exporters/importers for that.
Most likely G. brachybranchus, too small to tell though. Could be altifrons/abalios or a few other species.
Should have researched prior to purchase. Best kept in shoals of at least 4+ of their own species and should be kept on a sand substrate, not hyper-colour blue gravel that it can't sift (how they ideally feed).