Pristigenys

Iwatsuki, Yukio, Matsuda, Tsuyoshi, Starnes, Wayne C., Nakabo, Tetsuji & Yoshino, Tetsuo, 2012, A valid priacanthid species, Pristigenys refulgens (Valenciennes 1862), and a redescription of P. niphonia (Cuvier in Cuvier & Valenciennes 1829) in the Indo-West Pacific (Perciformes: Priacanthidae), Zootaxa 3206, pp. 41-57 : 43

Key to the species of Pristigenys from the Indo-West Pacific

1 a. Soft dorsal-fin rays 12; anal soft rays 11; many red narrow bars on body with many red spots between bars in adult fresh specimens, mid-lateral scales ( Figure 1) with posterior spinules coarse and few in number (less than 25 at all sizes, Starnes, 1988, figure 1 b).................................................................................... P. m e y e r i

1 b. Soft dorsal-fin rays 11; anal soft rays 10; five white or light indistinct bars on body; mid-lateral scales with posterior spinules finer, more numerous (25–55 in specimens over 150 mm SL, Figures 7, 8)....................................... 2 a

2 a. Soft portions of vertical fins with black margins (usually persisting in preserved specimens); five white or pale vertical bands on body narrower and distinct, about 1 / 4 – 2 / 5 width of pupil; dorsal and ventral portions of third vertical band only slightly wider than mid-lateral portion and nearly vertical ( Figures 2 A, 3 A, 6 A); total gill rakers on first arch 23–26, mode 24 (6–9 on upper limb, 16–18 on lower); posterior spinules on mid-lateral scales lower in number, usually 20-40 (mean of S 1 –S 4, see Figure 1) in specimens over 150 mm SL ( Figure 7 A) though decreasing in very large individuals (> 250 mm SL); caudal fin more rounded ( Figures 1 A, 6 A)............................................................. P. refulgens ( Figure 2 A)

2 b. Soft portions of vertical fins lacking black margins; five white or pale vertical bands (often indistinct) on body somewhat wider, around 1 / 2–3 / 5 width of pupil diameter ( Figures 2 B, 3 B–D, 6 B) with dorsal and ventral portions expanded obliquely posterodorsally (often strongly curved posteriorly in young less than 100 mm SL ( Figures 2 B, 3 B–D); total gill rakers on first arch 27–31, mode 27 (7–10 on upper limb, 19–22 on lower); posterior spinules on mid-lateral scales finer and more numerous, usually 35–60 in specimens over 150 mm SL ( Figure 7 B) increasing with growth; caudal fin somewhat double emarginate in adults............................................................................. P. niphonia ( Figure 2 B)