Leptaulopus damasi (Tanaka 1915)
Other Names: Esodamashi
Neotype of Leptaulopus damasi, NSMT-P115220, from Kagoshima Prefecture, Japan. Source: Hiro Motomura, Fig. 5A, in Gomon et al. (2013) Species Diversity 18: 141-161. License: All rights reserved
Summary:
A relatively slender mottled dark pinkish-brown threadsail becoming paler below, with the rear of the maxilla and the posterior and ventral margins of the preopercle dusky brown, a pinkish dorsal fin with about three narrow stripe along the outer half of the fin, and a pale caudal fin with two to four broad red bands across each lobe.
Cite this page as:
Bray, D.J. 2023, Leptaulopus damasi in Fishes of Australia, accessed 20 Apr 2025, https://fishesofaustralia.net.au/Home/species/2773
Leptaulopus damasi (Tanaka 1915)
More Info
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Distribution |
Off Marion Reef, Coral Sea, Queensland, in depths of 368-370 m. Elsewhere, the species occurs in Japan and Taiwan in 250-508 m. |
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Features |
Dorsal fin 13-14; Anal fin 8-9; Pectoral fin 12; Pelvic fin 9; Vertebrae 20-21 + 15-16 = 36; Gill rakers 2-3 + 9-12 = 11-15; Lateral line scales 33-37; scales below lateral line 3.5; predorsal scales 13–17. Snout moderately elongate, length 10.6– 12.6% SL, 30.3–34.3% HL, longer than eye diameter, slightly dorsoventrally flattened, narrowly rounded from above; bony interorbital narrow, width 2.4–4.0% SL and 7.0–11.1% HL; distance from snout tip to dorsal-fin origin 40.3–46.7% SL and 115–130% HL; anal-fin base 8.2–10.2% SL and 22.6–29.0% HL. |
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Colour |
Expanded posterior end of maxilla and posterior and ventral margins of preopercle dusky to dark brown. Dorsal fin translucent with about three narrow submarginal stripes paralleling outer edge of fin, obscure basally, intervening spaces on fin rays white. Caudal fin white with two to four broad red bands crossing each lobe, proximal band continuous across fin in some. |
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Similar Species |
Differs from Leptaulopus erythrozonatus in having fewer dorsal-fin rays (13-14 vs 15-16), 33-37 lateral line scales (vs 44), 36 vertebrae (vs 44), a larger eye, and a shorter, less depressed snout. |
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Species Citation |
Aulopus damasi Tanaka 1915. Figs Descript. Fishes of Japan... Tokyo Vol. 19: 340, pl. 92(295). Type locality: Kagoshima Prefecture, off Kusagaki Islands, 31°11.00'N, 129°29.28'E, 202 m (neotype). |
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Author |
Bray, D.J. 2023 |
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Resources |
Leptaulopus damasi (Tanaka 1915)
References
Gomon, M.F., Struthers, C.D. & A.L. Stewart. 2013. A new genus and two new species of the family Aulopidae (Aulopiformes), commonly referred to as Aulopus, flagfins, Sergeant Bakers or Threadsails, in Australasian waters. Species Diversity 18: 141-161 https://doi.org/10.12782/sd.18.2.141
Hata, H., Itou, M. & Motomura, H. 2012. First record of Aulopus damasi (Aulopiformes: Aulopidae) from Kagoshima Prefecture, southern Japan. Nature of Kagoshima 38: 9-11 (in Japanese)
Masuda, H., Araga, C. & Yoshino, T. 1975. Coastal Fishes of Southern Japan. Tokyo : Tokai Univ. Press 382 pp. 11 figs 143 pls. (as Hime damasi)
Tanaka, S. 1915. Figures and Descriptions of the Fishes of Japan, including Riukiu Islands, Bonin Islands, Formosa, Kurile Islands, Korea and southern Sakhalin. Tokyo Vol. 19 pp. 319–342 pls 91–95.
