The head of males is yellowish, densely covered with melanophores, two vertical suborbital dark stripes and a dark brown spot are visible on the lower half of the pectoral fin base.
The body of males is dark brown, there is a row of 4 -10 whitish spots on the back, the underside of the body with a row of 3 - 8 vertical whitish stripes or spots.
The first and second dorsal fins are also densely covered with melanophores, the third dorsal fin, caudal and pectoral fins dark grey, the anal fin blackish.
In females, the head and body are yellowish with a short preorbital brown stripe and suborbital brown spots on the head.
On the anterior side of the body there are two double dark brown bars surrounding whitish spots.
On the underside of the body, behind the bars, about 6 faint vertical bars may be visible forming whitish spots.
The first dorsal fin is translucent, with some melanophores scattered around the spines.
The second dorsal fin is also translucent and slightly dark grey.
The third dorsal, caudal, pectoral and pelvic fins are also translucent or whitish, and the anal fin may have about 9 oblique brown bands.
Enneapterygius: from Greek, ennea = number nine + from Greek, pterygion = small fin.
"Pallidoserialis" comes from Latin, "pallidus" = pale + from Latin, "serialis" = in a row (here a row of spots).
The name refers to the pale colour pattern and the similarity to Enneapterygius triserialis.