Coelorinchus fuscigulus Iwamoto, Ho, and Shao 2009
- 1. Section of Ichthyology, California Academy of Sciences, 55 Music Concourse Drive, San Francisco, CA 94118, USA;
- 2. Laboratory of Marine Biology, Faculty of Science, Kochi University, 2 - 5 - 1 Akebono-cho, Kochi, 780 - 8073, Japan;
- 3. Research Center for Biodiversity, Academia Sinica No. 128, Sec. 2, Academia Road, Nankang, Taipei 115, Taiwan;
Description
Coelorinchus fuscigulus Iwamoto, Ho, and Shao, 2009
Coelorinchus fuscigulus Iwamoto, Ho, and Shao, 2009:40–45, figs. 1–2 (holotype ASIZP 70169, 74.8 mm HL, 322 mm TL; NET, Da-xi, 24.94°N, 121.9°E; 9 paratypes NET and East China Sea).
Coelorinchus cylindricus (non Iwamoto and Merrett, 1997): Shao et al., 2008: table 2 (listed, 1 spec. NET, 400–600 m).
MATERIAL EXAMINED.— All type specimens as listed in original description (Iwamoto et al., 2009). ASIZP 70169 (holotype, 74.8 HL, 322 TL), Da-xi,); ASIZP 63249 (1, paratype, 56.1 HL, 233 TL), Da-xi; ASIZP 66922 (1, paratype, 66.2 HL, 286 TL), CP 248, 536 m; ASIZP 66973 (1, paratype, 72.7 HL, 293 TL), Nan-fang-ao; ASIZP 70168 (1, paratype, 77.1 HL, 301+ TL), Da-xi; CAS 228337 (2 paratypes, ex. ASIZP 70168, 66.9–74.1 HL, 302+-285+ TL), Da-xi; CAS 228338 (1, paratype, 66.9 HL, 266 TL), Nan-fang-ao; East China Sea: ASIZP 63193 (1, paratype, 52.2 HL, 228 TL) and CAS 224492 (1, paratype, ex. ASIZP 63193, 45.4 HL, 190 TL), Diao-yu-tai Archipelago, Yilan, Taiwan.
DISTINGUISHING FEATURES.— 1D II, 8–9; P i16–i18; GR-I (inner) 7–9 total; scales below midbase 1D 5.5–6.5, below 2D 6.5–7.5; pyl.caeca 19–24. Snout produced and sharply pointed, length 36–41% HL, 1.4–1.7 times orbit; anterolateral margin of snout incompletely supported by bone; orbit 24–25% HL, upper jaw 26–30% HL. Nasal fossa scaled ventrally; underside of head naked except for overlapping scales on anterolateral snout margin; body scales with small, sharp spinules arranged in 10–13 parallel rows. Light organ Group IV of Iwamoto (1990); anterior fossa near isthmus, posterior before anus, no black stripe connecting the two. Rays of 2D well developed, about equal to opposite rays of anal fin. Overall color medium brown to grayish, but in fresh specimens silvery on ventral sides of head and trunk (bluish in preserved specimens); 8–11 prominent saddles on body; fins dusky to blackish; lips and jaws pale; branchiostegal region blackish. Attains at least 322 mm TL.
DISTRIBUTIONs.— Known only from NET and East China Sea in Diaoyutai Archipelago, Taiwan, in approximately 600 m.
REMARKS.— Coelorinchus fuscigulus was previously confused with C. cylindricus, a species known only from the holotype taken off New Caledonia, but that species has a complete bony support of the anterorlateral snout margin. Among the Taiwan members of the genus, C. fuscigulus is most similar to C. brevirostris, C. cingulatus, and C. hubbsi. The body markings easily distinguish the species from C. brevirostris and C. hubbsi; the blackish branchiostegals that contrast strongly with the pale gular membrane, the fully blackish 1D, and lack of an elongated 1D spinous ray distinguish it from C. cingulatus.
Notes
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Linked records
Additional details
Identifiers
Biodiversity
- Collection code
- ASIZP , CAS , CAS, ASIZP , NET
- Family
- Macrouridae
- Genus
- Coelorinchus
- Kingdom
- Animalia
- Material sample ID
- ASIZP 63193 , ASIZP 63249 , ASIZP 66922 , ASIZP 66973 , ASIZP 70168 , ASIZP 70169 , CAS 224492, ASIZP 63193, 45 , CAS 228337, ASIZP 70168, 66 , CAS 228338
- Order
- Gadiformes
- Phylum
- Chordata
- Scientific name authorship
- Iwamoto, Ho, and Shao
- Species
- fuscigulus
- Taxon rank
- species
- Type status
- holotype , paratype
- Taxonomic concept label
- Coelorinchus fuscigulus Iwamoto, 2009 sec. Iwamoto, Nakayama, Shao & Table, 2015
References
- IWAMOTO, T., H. - C. HO, AND K. - T. SHAO. 2009. Description of a new Coelorinchus (Macrouridae, Gadiformes, Teleostei) from Taiwan, with notable new records of grenadiers from the South China Sea. Zootaxa 2326: 39 - 50.
- MERRETT, N. R., AND R. L. HAEDRICH. 1997. Deep-sea Demersal Fish and Fisheries. Chapman and Hall, London, England, UK. 282 pp.
- SHAO, K. - T., T. IWAMOTO, H. - C. HO, T. - Y. CHEN, AND C. - Y. CHEN. 2008. Species composition and distribution pattern of grenadiers (family Bathygadidae, Macrouridae and Macrouroididae) from Taiwan. Pages 17 - 29 in A. Orlov and T. Iwamoto, eds., Grenadiers of the World Oceans: Biology, Stock Assessment, and Fisheries. American Fisheries Society, Symposium 63, Bethesda, Maryland, USA. 484 pp.
- IWAMOTO, T. 1990. Family Macrouridae. Pages 90 - 317 in D. M. Cohen, T. Inada, T. Iwamoto, and N. Scialabba, FAO Species Catalogue. Vol. 10. Gadiform fishes of the world (Order Gadiformes). An annotated and illustrated catalogue of cods, hakes, grenadiers and other gadiform fishes known to date. FAO Fisheries Synopsis no. 125. FAO, Rome, Italy. 442 pp.