In the second picture you posted, the fish on the right has an opercular mark (on the bottom of the cheek) and the bar behind the abdominal spot forms a "Y"..... G. dicrozoster. The fish on the left doesn't have either of those characteristics and much more pronounced lateral stripes, and a mixture of stripes and spots in the tail.... G. abalios.upyor said:
Both species come from the same rivers, and often come in the same shipments, so it's common to find them mixed from stores/venders.
