The family Nomeidae (order Perciformes) consists of 16 species in three genera (
During a survey of fish fauna, a single specimen belonging to the family Nomeidae was collected off Jeju Island, Korea, and identified as
Sampling and morphological analysis
On 8 July, 2013, a single specimen of
Total DNA was extracted from the muscle tissue using the DNA extraction Kit (AccuPrep® , Bioneer, Korea) according to the manufacturer’s protocol. The mitochondrial cytochrome
(New Korean genus name: Ga-neun-dong-gang-yeon-chi-sok)
Body elongate and somewhat compressed, covered with small cycloid scales; bases of the second dorsal and anal fins very long; fan-like pelvic fin, large and broad; small teeth on jaws, vomer, and palatines; blotched and spotted pattern on the body; air-bladder present; numerous pyloric appendage; 41 vertebrae (Jordan and Gilbert, 1883; Haedrich, 1967).
Nomeus gronovii (
(New Korean species name: Ga-neun-dong-gang-yeon-chi) (Figs.1-2, Table 1)
[Fig. 2.] Pectoral fin of Nomeus gronovii (PKU 9300) fixed in alcohol. Black arrow indicate the white part of pectoral fin. White arrows indicate the blotch and spot on below of the pectoral fin.
[Table 1.] Comparison of counts and measurements of Nomeus gronovii
Comparison of counts and measurements of Nomeus gronovii
PKU 9300, one specimen, 151.3 mm in standard length (SL), Jeju Island, Korea, 8 July, 2013, collected by Soo Jeong Lee, trawl.
Counts and measurements are given in Table 1. Body elongated and rather compressed; snout tip rounded; posterior end of the upper jaw reaches to below the anterior part of the eye; teeth on jaws, vomer, and palatines; dorsal fin scarcely separated and the origin of the first dorsal fin located a little behind the origin of the pectoral fin; bases of second dorsal and anal fins very long, second dorsal fin slightly longer than the anal fin, anal fin originating slightly behind the origin of the second dorsal fin, pectoral fin extending far beyond the origin of the anal fin, pelvic fin does not reach the origin of the anal fin, caudal fin deeply forked; pectoral fin mostly black, but lower part white. Groove present in the anterior part of the anus, connected to the pelvic fins; scales extend to the interorbital space on the dorsal surface of the head and are present above the gill cover, the area of the scales on the cheek does not reach the anterior margin of the eye; eye diameter moderate and slightly smaller than the snout length; nostrils located on the tip of the snout, anterior large and round and posterior slit.
When fresh, dorsal space is bright blue; ventral region silvery; there are dark blotches on the underside of the body; all fins are black except the lower part of pectoral fin; the margin of the eye is black; upper area and edge of the gill cover are black. After alcohol fixation, the head, body, and tail are mostly brown; large dark brown blotches on the underside of the body; dorsal, anal, and caudal fins brownish; pelvic and pectoral fins black, but lower pectoral fin white.
Known from western Atlantic including Newfoundland, Canada, and the northern Gulf of Mexico to Brazil (Robins and Ray, 1986), the eastern Atlantic, including north-west Africa and the Canary Islands (Hereau et al., 1986), and the western North Pacific, including Japan and Taiwan (Nakabo, 2002; Ho et al., 2011), and Korea (present study).
The family Nomeidae consists of three genera (