Gymnothorax longinaris Allen, Erdmann & Sianipar 2018

Gymnothorax longinaris at Komodo Island, Indonesia, October 2014. Source: bossed / License: CC by Attribution-NonCommercial

A pale reddish-brown moray becoming white below, with 14 broad dark brown bars (anteriormost mottled) extending onto the dorsal fin as white-edged black bars that resemble ocelli when viewed from above, and dense reddish-brown spotting in the pale areas between the bars. The rear nostril nostril is within an unusually elongate dermal flap.

Cite this page as:
Bray, D.J. 2021, Gymnothorax longinaris in Fishes of Australia, accessed 25 May 2024,

Gymnothorax longinaris Allen, Erdmann & Sianipar 2018

More Info


Off the Swains Reefs in the Coral Sea, dredged in 63 m. Elsewhere the species occurs in Indonesia (Flores and Komodo).


Vertebrae 117.
A small, moderately robust moray, body length slightly less than tail length; posterior nostril encased within unusual elongate dermal flap, its length 7.1 in HL; dorsal fin origin anterior to level of gill opening; vertebral count relatively low for genus.
Jaws subequal, mouth closing completely; teeth in jaws uniserial, stout, conical to triangular, and non-serrated, nearly subequal, except posteriomost teeth smaller; three intermaxillary teeth continuous with row of nine maxillary teeth, three pairs of depressible canines behind intermaxillary symphysis; mandible with three teeth at symphysis and 10 on each side of jaw.
Anterior nostril tubular, length 13.9 in HL, extending beyond snout tip; posterior nostril above front corner of eye, opening large and within an elongate dermal flap, its length 7.1 in HL, flap solid on anterior and lateral sides, but hollow posteriorly. Head with three pores on snout (including two on dorsal surface and third medial to and slightly below anterior nostril), five pores along upper jaw, and six pores along the mandible.


Pale reddish brown on upper two-thirds of body, white below, with 14  broad dark brown bars, pale spaces between bars and adjacent pale areas of dorsal fin profusely covered with red-brown spotting; dorsal fin with 14, white-edged black bars, appearing as ocelli, when viewed from above.

Similar Species

Differs from all other members of the genus Gymnothorax in having a combination of enlarged posterior nasal appendages, 117 total vertebrae, and in the colour pattern of 14 dark-brown bars and 14 large, ocelli markings (when viewed dorsally) on the dorsal fin.


The specific name longinaris is from the Latin longus (= long) and naris (= nostril) in reference to the elongate posterior nasal appendages.

Species Citation

Gymnothorax longinaris Allen, Erdmann & Sianipar 2018, aqua, International Journal of Ichthyology 24(2): 38, Figs. 1-3A, 4-7. Type locality: Pulau Seraya Besar, northwest Flores, Indonesia, 08°23.255'S, 119°52.485'E, depth 18 m.


Bray, D.J. 2021


Atlas of Living Australia

Gymnothorax longinaris Allen, Erdmann & Sianipar 2018


Allen, G.R., Erdmann, M.V. & Sianipar, A.B. 2018. Descriptions of two new species of moray eels (Pisces: Muraenidae) from northwestern Flores, Indonesia. aqua, International Journal of Ichthyology 24(2): 37-46 See ref online

Quick Facts

CAAB Code:37060100

Depth:18-63 m

Habitat:Reef associated

Max Size:24 cm TL

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