Genko Sole

Occurs in the sublittoral zone on sandy mud bottoms (Ref. 11230).

fisheries: commercial

Cynoglossus interruptus Günther

Cynoglossus interruptus Günther, 1880:70, pl. 30: fig. B [type-locality: Yokohama, Japan].—Steindachner, 1896:220 [Kobe, Hioga, Nagasaki].—Jordan and Snyder, 1900:380 [Tokyo]; 1901:123 [Yokohama].—Smith and Pope, 1906: 498.—Wu, 1932:146.—Ochiai, 1959:202; 1963:82, pl. 17: fig. 2.—Chu, 1963:538, fig. 403.—Shen, 1967:212 [Hong Kong].—Ochiai, 1966:84.

Areliscus interruptus.—Jordan and Starb, 1906a:240 [Tokyo, Nagasaki, Wakanoura, Matsushima, Onomichi].—Snyder, 1912:441.—Jordan, Tanaka, and Snyder, 1913:336.—Jordan and Thompson, 1914:213.—Hubbs, 1915:494.—Jordan and Hubbs, 1925:302 [Toba, Kobe, Mikawa, Misaki].—Reeves, 1927:14.—Ui, 1929:276.—Schmidt and Lindberg, 1930:1149.—Chu, 1931:95.—Kamohara, 1934: 462:—Kuronuma, 1939:83.—Yanai, 1950:22.—Kuroda, 1951: 390.—Honma, 1952:225.—Mori, 1952:184.

Cynoglossus nigropinnatus Ochiai, 1959:205 [type-locality: Owase, Mimase, Kochi, Japan]; 1963:85, pl. 19.

DESCRIPTION.—Based on 34 specimens, 89.0–158.0 mm SL.

Depth of body 25.47–35.62 (M = 28.97), length of head 18.52–24.11 (M = 21.25) percent of standard length. Diameter of eye 10.53–21.05 (M = 14.18) percent of length of head, interorbital space absent. Two nostrils on ocular side, anterior nostril tubular in front of fixed eye, posterior nostril simple, just above anterior border of lower eye. Snout rounded, 25.0–37.14 (M = 31.81) percent of length of head, rostral hook short, extending only to front of anterior nostril. Maxillary extending to just below middle of fixed eye; angle of mouth extending to below vertical from anterior half of lower eye, much nearer to tip of snout than to branchial opening; tip of snout to angle of mouth 33.33–52.63 (M = 43.84), angle of mouth to branchial opening 36.36–63.16 (M = 56.02) percent of length of head.

Scales: Ctenoid on both sides, including those on lateral lines; scales small, moderately serrated with short ctenii on blind side, weakly serrated on ocular side.

Lateral-Line System: Two or three lateral lines on ocular side. Dorsolateral line undulated, interrupted at middle of body, becoming obscure or runnng backward along the dorsal contour entering dorsal fin along 8th to 12th rays counted from the rear; the ventrolateral line absent or present, when present either interrupted at middle of body or running backward and entering anal fin a few rays counted from the rear. The dorsolateral line is usually well developed when the ventrolateral line is present to the fullest extent. Midlateral line with 60–67 (M = 63) scales, 11–12 scales between middle and upper lateral lines. No lateral line on blind side.

Interlinear scale rows 11 12

Frequencies 17 14

Fins: Dorsal with 103:110 (M = 107) rays, anal with 84–86 (M = 85) rays, caudal 10 in 5 specimens (radiograph).

Vertebrae: 52, comprising 9 abdominal and 43 caudal elements in 5 specimens (radiograph).

Coloration: Upper side brownish, with or without dark blotches, blind side yellowish in preserved specimens.

Size: Largest specimen examined, 168 (158 + 10) mm, is from Mimase, Kochi, Japan.

DISTRIBUTION.—Japan.

DIAGNOSIS AND

分布於西北太平洋區，由日本至南中國海。台灣西部、南部及澎湖海域有產。

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；兩眼均位於左側，極為接近。鼻孔兩個。口小，下位，口裂弧形；口角緣近於吻端；上頜向後不達下眼前緣；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。被櫛鱗，兩側櫛鱗區不相等；眼間隔處不具鱗片；僅眼側具側線三條，上側線在體中央呈間斷的波紋狀，下側線亦常中斷於體中部；側線鱗數57-72；兩側線間鱗數11-12；上側線至背鰭基部間鱗數2-3。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 101-113； 臀鰭軟條數 80-90；腹鰭軟條數 4；尾鰭軟條數 10；脊椎骨數 53-55。眼側黃褐色，有時具雲狀暗斑，鰭黃色，奇鰭具2-3列點狀暗色縱紋；盲側淡黃白色，鰭淡黃色。

棲息於近海大陸棚泥沙底質海域。以底棲之無脊椎動物，如多毛類及甲殼類等為食。