Teleostei (teleosts) >
Anguilliformes (Eels and morays) >
Muraenidae (Moray eels) > Muraeninae
Etymology: Gymnothorax: Greek, gymnos = naked + Greek, thorax, -akos = breast (Ref. 45335); longinaris: Name from Latin ‘longinaris’ meaning long nostril, referring to the elongate posterior nasal appendages.
Environment: milieu / climate zone / depth range / distribution range
Ecology
Marine; benthopelagic; depth range ? - 18 m (Ref. 123128). Tropical
Western Pacific: Indonesia.
Size / Weight / Age
Maturity: Lm ?  range ? - ? cm
Max length : 23.7 cm TL male/unsexed; (Ref. 123128)
Short description
Identification keys | Morphology | Morphometrics
This species is distinguished by the following characters: small, moderately robust with body length slightly less than tail length; posterior nostril encased within an unusual elongate dermal flap, its length 7.1 in HL; dorsal fin origin anterior to level of gill opening; vertebral count relatively low, total vertebrae 117. Colouration: in life pale reddish brown on upper two-thirds and 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 dorsally (Ref. 123128).
Cross section: oval.
Collected at night in coral reef habitat at a depth of 18 m (Ref. 123128).
Life cycle and mating behavior
Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae
Allen, G.R., M.V. Erdmann and A.B. Sianipar, 2018. Descriptions of two new species of moray eels (Pisces: Muraenidae) from northwestern Flores, Indonesia. aqua, Int. J. Ichthyol. 24(2):37-46. (Ref. 123128)
IUCN Red List Status (Ref. 130435: Version 2025-2)
Threat to humans
Harmless
Human uses
Fisheries: minor commercial
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