Gomon's Hagfish, Eptatretus gomoni Mincarone & Fernholm 2010


Gomon's Hagfish, trawled in 700 metres near Ashmore Reef, off WA

Gomon's Hagfish, trawled in 700 metres near Ashmore Reef, off WA. Source: Source: Dianne Bray / Museum Victoria; Rights CC by (Atribution). License:

Summary:
Known only from two specimens collected off Western Australia. Gomon's Hagfish differs from all other Australian hagfishes in having eight pairs of gill pouches, three-cusp multicusps on the anterior and two-cusp multicusps on the posterior row of cusps.

Cite this page as:
Dianne J. Bray, Eptatretus gomoni in Fishes of Australia, accessed 21 Jul 2018, http://fishesofaustralia.net.au/home/species/4764

Gomon's Hagfish, Eptatretus gomoni Mincarone & Fernholm 2010

More Info


Max Length Australia

790

Distribution

Endemic to Western Australia, and known only from off Exmouth and off Cape Leveque, 260-705 m; found on soft bottoms.

Features

Meristic features: three-cusp multicusps on the anterior and two-cusp multicusps on the posterior row of cusps. Anterior unicusps (left/right) 11/10 (10/10). Posterior unicusps (left/right) 9/10 (10/10). Total cusps 50 (50). Prebranchial pores 13 (12). Branchial pores 7 (8). Trunk pores 57 (58). Tail pores 14 (15). Total pores 91 (93).

Size

To 79 cm

Colour

Purplish-brown with a dark caudal fin in life; brown in preservative with a pale margin to the gill apertures and ventral finfold; caudal finfold darker.

Feeding

Hagfishes scavenge on dead or dying marine life, primarily on fishes and invertebrates, but also on marine mammals that have sunk to the ocean floor. They feed by rasping flesh with their horny teeth, often going completely inside sunken carcasses and feeding from the inside out.

Biology

The sexes are separate and fertilization is external. Hagfishes lay large demersal eggs.

Fisheries

Of no interest to fisheries.

Conservation

Not listed.

Similar Species

Eptatretus gomoni differs from all other members of the genus by having the following combination of characters: eight pairs of gill pouches; three-cusp multicusps on the anterior and two-cusp multicusps on the posterior row of cusps; anterior unicusps 10–11; posterior unicusps 9–10; total cusps 50; prebranchial pores 12–13; branchial pores 7–8; trunk pores 57–58; tail pores 14–15; total pores 91–93; no nasal-sinus papillae.

Etymology

The species is named after Martin F. Gomon, senior curator of fishes at Museum Victoria, in recognition of his distinguished contributions to ichthyology.

Species Citation

Eptatretus gomoni Mincarone & Fernholm 2010, J. Fish Biol. 77:794, Figs. 2E, 7-8

Type locality: West of Shark Bay-Exmouth, Western Australia, Australia, depth 260 metres (trap).

Author

Dianne J. Bray

Gomon's Hagfish, Eptatretus gomoni Mincarone & Fernholm 2010

References


Mincarone, M.M.& B. Fernholm. 2010. Review of the Australian hagfishes with description of two new species of Eptatretus (Myxinidae). Journal of Fish Biology 77: 779-801.

Quick Facts


CAAB Code:37004006

Biology:Scavenger

Depth:260-705 m

Feeding:Carnivore

Habitat:Marine

Max Size:To 79 cm

Native:Endemic to Australia

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