dcsimg

Biology

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Recorded from a depth of 225 m (Ref. 5297).
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Comprehensive Description

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Cynoglossus sealarki Regan

Cynoglossus sealarki Regan, 1908:235, pl. 26: fig. 1 [type-locality: Saya-de-Malha Bank].—Norman, 1928:195.

DESCRIPTION.—Based on 4 specimens, 164–182 mm SL, including the lectotype and the paralectotypes of C. sealarki.

Depth of body 23.08–24.39 (M = 23.50), length of head 18.45–21.67 (M = 19.99) percent of standard length. Diameter of eye 9.38–12.82 (M = 11.08) percent of length of head, interorbital space 2.56–3.23 (M = 2.90) percent. Anterior nostril of eyed side tubular, in front of lower eye, posterior nostril absent. Snout rounded, 30.77–35.48 (M = 32.87) percent of head, rostral hook very short, extending to front of anterior nostril. Maxillary extending to below middle of fixed eye; angle of mouth extending to below vertical from anterior half of fixed eye, and nearer to tip of snout than to branchial opening; tip of snout to angle of mouth 30.77–45.16 (M = 37.92), angle of mouth to branchial opening 42.31–61.29 percent of length of head.

Scales: Ctenoid on ocular side including those of lateral lines; scales on blind side cycloid anteriorly and ctenoid posteriorly.

Lateral-Line System: Three lateral lines on ocular side, midlateral line with 64–66 scales, 10–11 scales between middle and upper lateral line in 3 specimens. No lateral line on blind side.

Interlinear scale rows 10 11

Frequencies 1 2

Fins: Dorsal with 112–116 (M = 114) rays, anal with 92–96 rays, caudal 10 in 2 specimens (radiograph).

Vertebrae: 57 comprising 9 abdominal and 48 caudal elements in 2 specimens (radiographs).

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

Size: Largest specimen examined the lectotype of C. sealarki, is 190 mm.

DISTRIBUTION.—Saya-de-Malha Bank; recorded from a depth of over 123 fms.

DIAGNOSIS AND
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bibliographic citation
Menon, A. G. K. 1977. "A systematic monograph of the tongue soles of the genus Cynoglossus Hamilton-Buchanan (Pisces, Cynoglossidae)." Smithsonian Contributions to Zoology. 1-129. https://doi.org/10.5479/si.00810282.238