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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).
Eponymy: Alf Johnson of Port Elizabeth, South Africa supplied Smith with “…many rare and valuable specimens”. [...] (Ref. 128868), visit book page.
More on author: Smith.

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

Marine; demersal; depth range 20 - 400 m (Ref. 100719). Subtropical

Distribution Countries | FAO areas | Ecosystems | Occurrences | Point map | Introductions | Faunafri

Western Indian Ocean: Red Sea south to Algoa Bay, South Africa.

Size / Weight / Age

Maturity: L_m ? range ? - ? cm
Max length : 130 cm TL male/unsexed; (Ref. 5503)

Short description Identification keys | Morphology | Morphometrics

Vertebrae: 135 - 137. Pale brown with irregular, light spots anteriorly, larger and more rounded on tail and in young. Corner of mouth and gill opening dusky.

Inhabits crevices (Ref. 5503). Minimum depth based of 20m (Ref. 81209).

Life cycle and mating behavior Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae

Main reference Upload your references | References | Coordinator | Collaborators

Randall, J.E. and D. Golani, 1995. Review of the moray eels (Anguilliformes: Muraenidae) of the Red Sea. Bull. Mar. Sci. 56(3):849-880. (Ref. 10713)

IUCN Red List Status (Ref. 130435: Version 2024-1)

Least Concern (LC) ; Date assessed: 17 August 2011

CITES

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Threat to humans

Harmless

Human uses

Fisheries: minor commercial

FAO - Publication: search | FishSource |

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Estimates based on models

Phylogenetic diversity index (Ref. 82804): PD₅₀ = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].

Bayesian length-weight: a=0.00048 (0.00025 - 0.00091), b=3.28 (3.12 - 3.44), in cm total length, based on LWR estimates for this Genus-body shape (Ref. 93245).

Trophic level (Ref. 69278): 4.2 ±0.7 se; based on size and trophs of closest relatives

Resilience (Ref. 120179): Very Low, minimum population doubling time more than 14 years (Preliminary K or Fecundity.).

Fishing Vulnerability (Ref. 59153): Very high vulnerability (78 of 100).

Price category (Ref. 80766): Medium.

Gymnothorax johnsoni (Smith, 1962)