This species differs from P. cryptus by having a concave rather than straight dorsal head profile, a higher modal gill raker count, and a series of five well-defined dark brown spots on the mid lateral line (these spots may be present on some P. cryptus, but are never well-defined). Best identified by the thin white barring on dorsal fin and upper sides (Ref. 48636). SL to 57 mm.
- Myers, R.F. 1991 Micronesian reef fishes. Second Ed. Coral Graphics, Barrigada, Guam. 298 p. (Ref. 1602) http://www.fishbase.org/references/FBRefSummary.php?id=1602&speccode=4306
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