Poisson demoiselle des mers du Sud, Southern demoiselle, Southern damsel, 南方金翅雀鯛,

Synonyme
Glyphidodontops notialis (Allen, 1975)

-----------------------------

Description
Dorsal spines (total): 13; Dorsal soft rays (total): 13-15; Anal spines: 2; Anal soft rays: 15-16; Pectoral rays: 16-18 (usually: 17); Pelvic rays: I, 5; Branched caudal rays: 13; Gill rakers on the first arch: 20-23 (usually: 20); Tubed lateral line scales: 16-18 (usually: 17); Vertical scale rows from upper edge of gill opening to base of caudal fin: 28; Horizontal scale rows from base of dorsal fin to terminal lateral line scale (exclusive of dorsal base sheath scales): 1.5; From lateral line to anal fin origin: 9; Predorsal scales about: 18-20, extending to level of nostrils; Teeth uniserial, incisiform, about: 40-44 in each jaw. Body elongate, laterally compressed, the greatest depth: 2.3-2.5 (usually: 2.5) in the Standard Length. Head profile conical, the Head Length contained: 3.3-3.5 (usually: 3.4) times in the standard length; Snout: 4.0-4.7 (usually: 4.7), eye diameter: 2.6-3.1 (usually: 2.9); Interorbital width: 3.7-3.9 (usually: 3.8), least depth of caudal peduncle: 2.0-2.1 (usually: 2.0), length of caudal peduncle: 2.5-2.9 (usually: 2.7), of pectoral fin: 0.9-1.0 (usually: 1.0), of pelvic fin: 0.9-1.0 (usually: 0.9), of middle caudal rays: 1.2-1.4 (usually: 1.2), all in the head length. Single nasal opening on each side of snout; Mouth oblique, terminally located; Lateral line gently arched beneath dorsal fin, terminating 1,1/2 scale rows below base of second to third soft dorsal ray; Preorbital, snout tip, lips, chin and isthmus naked; Remainder of head (including suborbitals) and body scaled; Head scales cycloid, remainder finely ctenoid; Preopercle scale rows 2 with additional row of scales on inferior limb; Small sheath scales covering basal 1/3 to 2/3 of membraneous portions of dorsal, anal and caudal fins; Margin of preorbital, suborbital, preopercle and opercle entire. Origin of dorsal fin at level of second tubed lateral line scale; Spines of dorsal fin gradually increasing in length to last spine; Caudal fin forked, the lobes filamentous; Pectoral fins pointed. Max length: 9.0 cm TL. Depth range: 7 - 45 m.

Color
Head and anterior portion of body blue-grey grading to blackish behind pectoral fins; Dorsal, anal, and basal portion of caudal fin bluish-black; Dorsal and anal fins with bright blue margin; Distal half of caudal fin blue; Pelvic fins dusky with bluish anterior edge, tips black; Pectoral fins light blue with blackish spot superiorly at base.

Etymology
Chrysiptera: from Greek, chrysos = golden + from Greek, pteron = fin, wing. Referring to yellow caudal fin and/or yellowish pectoral and ventral fins of Glyphisodon azureus Cuvier, 1830 (= Chrysiptera cyanea (Quoy & Gaimard, 1825)).
notialis: from Greek, notos = southern. Name given in reference to its geographical distribution. It is the most southerly occurring species of Glyphidodontops and a common inhabitant of Lord Howe Island, the world's southernmost coral reef.
Original description: Glyphidodontops notialis Allen, 1975 - Type locality: off Phillip Point, Lord Howe Island, 31°32'S, 159°04'E, depth 15 meters, collected by J. Randall and B. Goldman, 17/11/1973, rotenone.

Distribution
Southwestern Pacific: Lord Howe Island, Norfolk Island and New Caledonia.

Biology
Adults inhabit outer rocky reefs. Oviparous, distinct pairing during breeding. Eggs are demersal and adhere to the substrate. Males guard and aerate the eggs.

Similar species
Chrysiptera rapanui (Greenfield & Hensley, 1970) - Reported from South Pacific: northern New Zealand, Kermadec Islands; Easter Island.