Smoothsnout Whiptail, Kumba gymnorhynchus Iwamoto & Sazonov 1994


Smoothsnout Whiptail, Kumba gymnorhynchus. Source: Tomio Iwamoto via Atlas of Living Australia. License: CC by Attribution-NonCommercial-ShareAlike

Summary:
A dark brown grenadier with a lighter brown head, a black ring around the eye and a black upper lip, a pale lower jaw and minute pale chin barbel, and darker operculum, gills, chest, abdominal area and pelvic-fin base. The species has an extensive naked area on the underside of head that extends over the top of the snout.

Cite this page as:
Bray, D.J. 2023, Kumba gymnorhynchus in Fishes of Australia, accessed 29 Mar 2024, https://fishesofaustralia.net.au/Home/species/1752

Smoothsnout Whiptail, Kumba gymnorhynchus Iwamoto & Sazonov 1994

More Info


Distribution

Off Albany, Western Australia; also the Cocos (Keeling) Islands region in the eastern Indian Ocean. Elsewhere the species occurs in the south-eastern Indian Ocean, South China Sea, and New Zealand - off the east coast and the Chatham Rise.
Inhabits seamounts ridges and rises.

Features

Dorsal fin II,10-11; Pectoral fin i20-24; Pelvic fin 10-11; Gill rakers 11; Branchiostegal rays 7.
Head firm head, not inflated, sensory canals lacking pores. Scaleless part of snout extending to lateral nasal angles but not onto forehead. Orbit diameter about 26% of head length; snout slightly longer than orbit; interorbital about equal to the orbit; upper jaw 40-43% HL; barbel minute, about 6-7% HL. Spinous second ray of first dorsal fin with small toothlike serrations. Body scales with 3-7 divergent rows of reclined spinules; membranes of basal parts of pectoral, pelvic, first dorsal fins and anal fin covered in scales that lack ridges and spinules. Anus in middle third of space between pelvic anal anal fins; lens of luminescent organ immediately anterior to anus. 

Etymology

The specific name gymnorhynchus is from the Greek gymnos (= naked) and rhynchos (= snout), in reference to the extensive naked area on the underside of head that extends over the top of the snout.

Species Citation

Kumba gymnorhynchus Iwamoto & Sazonov 1994, Proc. Cal. Acad. Sci. 48(11): 229, figs 3-4. Type locality: Indian Ocean, West Australian Ridge (Broken Ridge), 30°46'S, 93°20'E, depth 1260-1370 m. 

Author

Bray, D.J. 2023

Resources

Atlas of Living Australia

Smoothsnout Whiptail, Kumba gymnorhynchus Iwamoto & Sazonov 1994

References


Iwamoto, T., Nakayama, N., Shao, K.-T. & Ho, H.-C. 2015. Synopsis of the grenadier fishes (Gadiformes; Teleostei) of Taiwan. Proceedings of the California Academy of Sciences (Series 4)62(3): 31-126. See ref at BHL

Iwamoto, T. & Sazonov, Y.I. 1994. Revision of the genus Kumba (Pisces: Gadiformes, Macrouridae), with description of three new species. Proceedings of the California Academy of Sciences 48(11): 221-237, figs 1-9 See ref at BHL

McMillan, P.J. & Iwamoto, T. 2015. 103 Family Macrouridae. pp. 747-827 in Roberts, C.D., Stewart, A.L. & Struthers, C.D. The Fishes of New Zealand. Wellington : Te Papa Press Vol. 3 pp. 577-1152.

Quick Facts


CAAB Code:37232127

Biology:Bioluminescent

Depth:825-1370 m

Habitat:Seamounts, ridges and rises

Max Size:50 cm TL

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Species Maps

CAAB distribution map