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Teleostei (teleosts) > Anguilliformes (Eels and morays) > Muraenidae (Moray eels) > Muraeninae
Etymology: Gymnothorax: Greek, gymnos = naked + Greek, thorax, -akos = breast (Ref. 45335); ryukyuensis: 'ryukyuensis', i.e., from its locality, the Ryukyu Islands, Amami Island south to Yaeyama Islands where the type series was collected (Ref. 87015).

Environment: milieu / climate zone / depth range / distribution range Ecology

Marine; demersal. Subtropical

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Northwest Pacific: Japan (Ryukyu Islands).

Size / Weight / Age

Maturity: L_m ? range ? - ? cm
Max length : 95.1 cm TL male/unsexed; (Ref. 87015)

The largest specimen observed was male, 95.1 cm, total length (Ref .87015).

Life cycle and mating behavior Maturities | Reproduction | Spawnings | Egg(s) | Fecundities | Larvae

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Hatooka, K., 2003. A new moray eel, Gymnothorax ryukyuensis, from the western Pacific Ocean (Anguilliformes: Muraenidae). Bulletin of the Osaka Museum of Natural History 57:1-9. (Ref. 87015)

IUCN Red List Status (Ref. 130435)

Data deficient (DD) ; Date assessed: 11 December 2019

CITES

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Threat to humans

Harmless

Human uses

Fisheries: minor commercial

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More information

Trophic ecology
Food items
Diet compositions
Food consumptions
Food rations
Predators

Ecology
Ecology

Population dynamics
Growths
Max. ages / sizes
Length-weight rel.
Length-length rel.
Length-frequencies
Mass conversions
Recruitments
Abundances

Life cycle
Reproduction
Maturities
Fecundities
Spawnings
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Egg(s)
Egg developments
Larvae
Larval dynamics

Distribution
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Anatomy
Gill areas
Brains
Otoliths

Physiology
Body compositions
Nutrients
Oxygen consumptions
Swimming type
Swimming speeds
Visual pigment(s)
Fish sounds
Diseases / Parasites
Toxicities (LC50s)

Genetics
Genetics
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Human related
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Stamps, coins, misc.

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Estimates based on models

Phylogenetic diversity index (Ref. 82804): PD₅₀ = No PD50 data [Uniqueness, from 0.5 = low to 2.0 = high].

Bayesian length-weight: a=0.00047 (0.00025 - 0.00089), b=3.28 (3.13 - 3.43), in cm total length, based on LWR estimates for this Genus-body shape (Ref. 93245).

Trophic level (Ref. 69278): 4.1 ±0.7 se; based on size and trophs of closest relatives

Resilience (Ref. 120179): Low, minimum population doubling time 4.5 - 14 years (Preliminary K or Fecundity.).

Fishing Vulnerability (Ref. 59153): High vulnerability (58 of 100).

Gymnothorax ryukyuensis Hatooka, 2003