Yellowstem Dragonfish, Eustomias macrurus Regan & Trewavas 1930


Other Names: Scaleless Dragonfish

A Yellowstem Dragonfish, Eustomias macrurus, AMS I .20315-024, from 75 km E of Bate Bay, New South Wales, December 1977. Source: Ken Graham, New South Wales Fisheries. License: CC by Attribution-NonCommercial-ShareAlike

Summary:
A dragonfish with an unadorned barbel having an oblong bulb and an unadorned and unpigmented barbel stem except for a series of yellowish spots or patches associated with photophores. The species has pectoral fins (with more than 7 rays), and a series of large luminous spots on the lower side that are difficult to see or may be absent.

Cite this page as:
Bray, D.J. 2022, Eustomias macrurus in Fishes of Australia, accessed 10 Dec 2022, https://fishesofaustralia.net.au/home/species/1787

Yellowstem Dragonfish, Eustomias macrurus Regan & Trewavas 1930

More Info


Distribution

Coral Sea off Port Douglas, Queensland, to off Sydney, New South Wales. Elsewhere the species is circumglobal in equatorial to temperate waters (absent from Eastern Pacific). Usually at depths of 300-700 m, although may occur above 100 m at night.

Features

Dorsal fin 29; Anal fin 45; Pectoral fin >7; Pelvic fin 7. 
Barbel unadorned, bulb oblong, stem of barbel lacking pigment except for a series of yellowish spots or patches associated with photophores; series of large luminous spots on the lower side of the body difficult to discern to absent.Wide groove present on ventral body margin behind pectoral fins; pectoral fins present with more than 7 rays.

Etymology

The specific name macrurus is from the Greek makros- (= long, large) and oura (= tail), in reference to the elongate tail (rear portion of body) of this species.

Species Citation

Eustomias macrurus Regan & Trewavas 1930, Danish Dana Expedition 1920-22 in the North Atlantic and the Gulf of Panama, Oceanographical Reports 2(6): Fig. 52B, 53. Type locality: North Atlantic, 25°01'N, 56°21'W and 33°18'N, 56°03'W.

Author

Bray, D.J. 2022

Resources

Atlas of Living Australia

Yellowstem Dragonfish, Eustomias macrurus Regan & Trewavas 1930

References


Harold, A.S. 1999. Families Gonostomatidae, Sternoptychidae, Phosichthyidae, Astronesthidae, Stomiidae, Chauliodontidae, Melanostomiidae, Idiacanthidae, Malacosteidae. pp. 1896-1917 in Carpenter, K.E. & Niem, V.H. (eds). The Living Marine Resources of the Western Central Pacific. FAO Species Identification Guide for Fisheries Purposes. Rome : FAO Vol. 3 pp. 1397-2068. 

Harold, A. 2015. Eustomias macrurus. The IUCN Red List of Threatened Species 2015: e.T47165363A47461981. https://dx.doi.org/10.2305/IUCN.UK.2015-4.RLTS.T47165363A47461981.en. Accessed on 02 October 2022.

Parin, N.V. & Pokhilskaya, G.N. 1974. A review of the Indo-Pacific species of the genus Eustomias (Melanostomiatidae, Osteichthyes). Trudy Instituta Okeanologii. Akademiya Nauk SSSR. Moskva 96: 316-368 figs 1-19 (in Russian)

Regan, C.T. & Trewavas E. 1930. The fishes of the families Stomiatidae and Malacosteidae. Danish Dana Expedition 1920-22 in the North Atlantic and the Gulf of Panama, Oceanographical Reports 2(6): 1-143, Pls. 1-14.
Sutton, T.T., Hulley, P.A., Wienerroither, R., Zaera-Perez, D. & Paxton, J.R. 2020. Identification guide to the mesopelagic fishes of the Central and South East Atlantic Ocean. Rome : FAO: i-xvi + 1-327. See ref online

Quick Facts


CAAB Code:37109016

Biology:Bioluminescent

Conservation:IUCN Least Concern

Depth:100-700 m

Habitat:Mesopelagic

Max Size:28 cm SL

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Species Maps

CAAB distribution map