GYMNOCRANIUS EUANUS - (GUNTHER, 1879)
Actinopteri (Class) > Perciformes (Order) > Percoidei (Suborder) > Lethrinidae (Family) > Gymnocranius (Genus)
Iodine bream, Japan sea bream, Japanese large eye bream, Japanese sea bream, Paddletail seabream, Pearl-eyed snapper, Speckled emperor, Bossu blanc à points noirs,
Gymnocranius japonicus (Akazaki, 1961)
Monotaxis affinis (Whitley, 1943)
Sphaerodon euanus (Günther, 1879)
Body oblong, its depth 2.4 to 2.5 times in standard length. Dorsal profile of head sloping steeply; lower edge of eye well above a line from tip of snout to middle of caudal-fin fork; eye relatively large, although its diameter less than interorbital space and width of preorbital width (at least in adults); mouth relatively small, posterior part of jaws reaching to about level of nostril openings; outer surface of maxilla smooth; 2 or 3 pairs of small, slender canines at front of each jaw, other teeth villiform, but well developed molars on lateral sections of jaws. Dorsal fin with X slender spines and 10 soft rays; anal fin with III slender spines and 10 soft rays; pectoral-fin rays 14; caudal fin moderately forked, inner edge of fork slightly convex, with blunt tips, the median rays slightly longer than eye diameter. Lateral-line scales 48 or 49 plus 3 or 4 tubed scales extending onto base of caudal fin; cheek with 4 or 5 transverse scale rows; 4 ½ scale rows between lateral line and base of middle dorsal-fin spines; inner surface of pectoral-fin axil scaleless. Max length : 45.0 cm ; common length : 35.0 cm. Depth range 15 - 50 m.
Overall silvery white to greyish; scales of back and sides with a small brownish basal spot; scattered prominent black blotches mainly on anterior half of body; a very faint bar sometimes present below eye to lower edge of cheek; fins mainly clear to reddish, caudal fin sometimes dusky reddish brown; faint spots may be evident on dorsal, caudal, and anal fins.
Gymnocranius: Greek, gymnos = naked + Greek, kranion = skull.
Western Pacific: including southern Japan, South China Sea, Australia, Coral Sea, New Caledonia, and Tonga. Recently reported from Norfolk Island.
Occurs over sand and rubble areas adjacent to rock and coral reefs in lagoons and outer slopes. Feeds on bottom-dwelling gastropods. Also caught with bottom longlines and handlines. Marketed fresh.