Morphological description (GBIF)(Mô tả hình thái (GBIF))
Diagnosis: Distinguished from other species of Pristigenys by the following combination of characters: dorsal fin with ten spines and 11 soft rays; anal fin with three spines and ten soft rays; total gill rakers on first arch 27 – 31, mode 27 (7 – 10 on upper limb, 19 – 22 on lower limb); lateral-line scales 31 – 39, mode 35 (Tables 1 – 2); body scales above pectoral fin with about 11 – 60 spinules on posterior margin, the number increasing with growth (Figure 8); caudal fin generally rounded in young, becoming somewhat double emarginate in adults (noticeably in specimens over 150 mm SL; Figures 2 B, 6 B); posterior soft portions of vertical fins lacking black margins (Figures 2 B, 5 D – F); five white or pale vertical bands (often indistinct) on body about 1 / 2 – 3 / 5 width of pupil (Figures 2 B, 3 B – D, 6 B), expanded ventrally and dorsally with latter angled posterodorsally; very notable in young, less discernible in adults (Figures 2 B, 3 B – D, 6 B).
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Priacanthus niphonius Cuvier and Valenciennes, Hist. Nat. Poiss., Vol. 3, 1829, p. 107; Schlegel, 1842; Gunther, 1859.
Pseudopriacanthus niphonius Bleeker, Versl. Meded. Akad. Wet. Amsterdam, Ser. 2, Vol. 3, 1869, p. 241; Boulenger, 1895; Jordan and Hubbs, 1925; Weber and de Beaufort, 1929; Fowler, 1931; Herre, 1947.
Priacanthus (Pseudopriacanthus) niphonius Steindachner and Doderlein, Denkschr. Akad. Wiss. Wien, Math. Nat. Klasse, Vol. 47, 1883, p. 239.