Priocharax phasma is a minute species of freshwater ray-finned fish belonging to the family Acestrorhamphidae, the American characins. This fish is found in Brazil.
This species reaches a length of .
The fish's name means "phásma" in Greek, ÃÂìÃÂüñ, which is a ghost or a specter, referring to its almost completely transparent appearance, resembling that of a ghost.