Coelorinchus smithi Gilbert and Hubbs, 1920

Iwamoto, Tomio, Nakayama, Naohide, Shao, Kwang-Tsao & Table, Hsuan-Ching Ho, 2015, Synopsis of the Grenadier Fishes (Gadiformes; Teleostei) of Taiwan, Proceedings of the California Academy of Sciences 62 (3), pp. 31-126 : 67-68

Coelorinchus smithi Gilbert and Hubbs, 1920

Coelorhynchus smithi Gilbert and Hubbs, 1920:493–498 , fig. 20 (holotype, USNM 78212 ; Indonesia ne. of Celebes, 298 fm [545 m]; 8 paratypes, Philippines and Indonesia).— Okamura, 1970:179–183, pl. XXXIX, text-figs. 75–77 (63 spec., 144–322 mm TL; s. Japan in 300–610 m).— Okamura in Okamura et al., 1982:171, 353, fig. 103 (p.170) (8 spec., 242. 5–295 mm TL; Kyushu-Palau Ridge and Tosa Bay , in 300–610 m).

Coelorinchus smithi : Okamura in Masuda et al., 1984:98, fig. 83C (compiled).— Yatou in Okamura and Kitajima, 1984:231, 368, fig. 164 (p. 230) (5 spec., 235–385 mm TL; Okinawa Trough [East China Sea], in 400–600 m).— Shao et al., 2008: table 2 (8 spec., NET, SCS, SWT, 441–1110 m).

Caelorinchus smithi : Iwamoto and Williams, 1999:161–164, fig. 22 (10 spec., Java , n. and ne. Australia, 402–731 m).— Iwamoto and Graham, 2001:455, fig. 71 (1 spec., se. Australia, 740 m).— Nakabo, 2003:433 (compiled).— Chiou et al., 2004b:36, 47 (in key, list).

MATERIAL EXAMINED (7spec.).— NET: ASIZP 61330 (1, 316 TL) , Da-xi; ASIZP 61331 (1, 291 TL) , Da-xi. SWT: ASIZP 65523 (2, 250–265 TL) , CD 138, 441 m; ASIZP 65594 (2, 230–255 TL) , CD 141, 985– 1110 m; ASIZP 58062 (1, 230+ TL) , Tong-Sha Islands , SCS.

DISTINGUISHING FEATURES.—1D II 7–10; P i15–i19; GR-I (inner) 7–8 total; scales below midbase 1D 3.5–4.5, below 2D 4.5–6.0; pyl.caeca 19–37. Snout sharply pointed, length 39–52% HL; anterolateral margin of snout completely supported by bone; orbit 24–30% HL, upper jaw 20–29% HL; nasal fossa usually sparsely scaled ventrally; underside of head almost fully scaled (scales with 1–3 short rows of spinules). Light organ group II of Iwamoto (1990), fossa narrow and short, not extending to pelvic-fin bases. Spinules on body scales blade-like in 3–7 sharp, divergent, ridgelike rows. Ground color grayish-brown, paler to silvery ventrally, bluish over abdomen but not on chest; mouth and gill cavity dark; most fins dark dusky to blackish. Attains more than 32 mm TL.

DISTRIBUTION.— Broadly distributed from s. Japan to Indonesia and Australia, in 300–750 m. In Taiwan, specimens have been collected between 441 m and 1110 m.

REMARKS.— Among the Coelorinchus of Taiwan, C. smithi is most similar to C. leptorhinus , C. spinifer , C. macrorhynchus , and C. japonicus in having the anterolateral snout margin completely supported by bone. It is distinguishable from C. leptorhinus inhaving underside of snout fully scaled (cf. mostly naked) and from C. spinifer in having notably stronger, larger scale spinules on body scales, arrayed in three divergent rows with the middle row notably larger, and by having the length of the 1D base entering 1.2 times into the 1D-2D interspace. It differs from C. japonicus in having a distinct, though short, naked fossa before the vent (lacking in C. japonicus ), somewhat fewer scale rows below the midbase of 1D (3.5–4.5 vs. 4.5–6.0) and below 2D origin (4.5–6.0 vs. 5.5–7.5), fewer pyloric caeca (21–37 vs. 41–60), and narrower scale spinules (broad buttresses in C. japonicus ). Differences from C. macrorhynchus are discussed in the description of that species.