Cynoglossus gracilis Günther 1873

Body comparatively slender (19 to 23%) SL). Maxilla extending posteriorly beyond fixed eye. Corner of mouth nearer to branchial opening than to tip of snout (Ref 9895).

Cynoglossus gracilis Günther

Cynoglossus gracilis Günther, 1873a:244 [type-locality: Shanghai]; 1898:261 [New Chwang].—Mori, 1927:184.—Wu, 1932:160 [Yangtze R.].—Fowler, 1934b:214.—Tchang, 1955:304, fig. 189.—Chu, 1963:543, fig. 410.—Shen, 1967:209 [Kowloon].

Areliscus gracilis.—Reeves, 1927:14 [Chefoo].—Chu, 1931:96.—Matsubara, 1955:1286.

Trulla gracilis.—Fowler, 1934b:214.

Cynoglossus microps Steindachner, 1898:510 [type-locality: Hong Kong].—Wu, 1932:158.

Areliscus hollandi Jordan and Metz, 1913:62, pl. 9: fig. 3 [type-locality: Fusan, Korea].

Cynoglossus pellegrini Wu, 1932:159 [type-locality: Hainan].

Areliscus trigrammus [not Günther].—Chen and Weng, 1965:98, fig. 68 [Quemoy].

DESCRIPTION.—Based on 14 specimens (84–228 mm SL), including holotype and paratypes of C. gracilis.

Depth of body 19.08–23.20 (M = 20.78), length of head 16.92–23.18 (M = 20.42) percent of standard length. Upper eye not in advance of lower, diameter of eye 4.21–7.84 (M = 5.86), interorbital space 5.00–8.16 (M = 6.27) percent of length of head. Two nostrils on ocular side, anterior nostril tubular, in front of lower eye, posterior nostril simple, in anterior half of interorbital space, or at the middle of it. Snout obtusely pointed, 35.29–46.58 (M = 40.25) percent of length of head, rostral hook of moderate size, usually extending up to anterior nostril but sometimes reaching below anterior border of fixed eye. Maxillary extending to behind fixed eye; angle of mouth extending to below vertical from posterior border of fixed eye, nearer to branchial opening than to tip of snout; tip of snout to angle of mouth 47.73–57.53 (M = 52.14), angle of mouth to branchial opening 47.37–52.73 (M = 48.96) percent of length of head.

Scales: Large or moderate, ctenoid on both sides, those on blind side, particularly in large specimens, very weakly serrated with a much reduced number of ctenii.

Lateral-Line System: Three lateral lines on ocular side, midlateral line with 122–138 (M = 135) scales, 19–22 (M = 21) scales between middle and upper lateral lines. No lateral line on blind side.

Interlinear scale rows 19 20 21 22

Frequencies 2 2 9 2

Fins: Dorsal with 133–137 (M = 135) rays, anal with 104–108 (M = 106) rays, caudal 8 in 10 specimens (radiographs).

Vertebrae: 62–64, comprising 11 or 12 abdominal and 51–55 caudal elements in 10 specimens (radiographs).

Coloration: Upper side uniformly light brown, lower whitish in preserved specimens.

Size: Largest specimen examined, 278.0 mm, is from Liao-hu, N China.

DISTRIBUTION.—From South China Sea through Taiwan, Tung-hai, and Chefoo to Pusan in Korea.

DIAGNOSIS AND

分布於西北太平洋區，由黃海至南中國海。台灣西部海域有產。

中小型魚類，通常以底拖網捕獲，以煎食、紅燒或加工製品食之，數量較少，不具經濟價值。

體長舌形，極側扁，標準體長大於體高之4.4倍；兩眼均位於左側。鼻孔兩個。口小，下位，口裂弧形；上頜向後達下眼後緣；眼側無齒，盲側具細小絨毛狀齒；鋤骨與腭骨無齒。眼側唇緣無觸鬚或穗狀物。鰓膜與峽部分離。兩側皆被強櫛鱗；僅眼側具側線三條，側線鱗數130-138；兩側線間鱗數23-24。背鰭、臀鰭與尾鰭相連；無胸鰭；腹鰭與臀鰭相連；尾鰭尖形；背鰭軟條數 128-137； 臀鰭軟條數 104-108；腹鰭軟條數 4；尾鰭軟條數 7-8；脊椎骨數 62-64。眼側黃褐色，鰭為淡黃色，有些具黑褐色小點；盲側白色，常具不規則之褐色斑，鰭淡黃色。

棲息於近海大陸棚泥沙底質海域，可進入河口域覓食。以底棲之無脊椎動物為食。