Teleostei (teleosts) >
Anguilliformes (Eels and morays) >
Muraenidae (Moray eels) > Muraeninae
Etymology: Gymnothorax: Greek, gymnos = naked + Greek, thorax, -akos = breast (Ref. 45335); elaineheemstrae: Named after Mrs Elaine Heemstra (NRF-SAIAB Honorary Research Associate) for her tremendous support in mentoring the first author in fish taxonomy.
Environment: milieu / climate zone / depth range / distribution range
Ecology
Marine; demersal; depth range ? - 40 m (Ref. 123145). Tropical
Western Indian Ocean: South Africa.
Size / Weight / Age
Maturity: Lm ?  range ? - ? cm
Max length : 71.0 cm TL male/unsexed; (Ref. 123145)
Short description
Identification keys | Morphology | Morphometrics
Vertebrae: 136. This species is distinguished by the following characters: dorsal-fin origin is anterior to gill opening; anal-fin origin just behind anus; body with mottled and faintly reticulated color pattern on a dark brown background; long intermaxillary canines 3, in a median row; vomerine teeth small, in a single row; maxillary teeth biserial; vertebral count: predorsal 3-5, preanal 54-58, total 134-136 (Ref. 123145).
Occurs in rock, intertidal and tide pools and sand bottoms (Ref. 123145).
Life cycle and mating behavior
Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae
Sithole, Y., D.G. Smith, M. Mwale and G. Gouws, 2020. A taxonomic revision of Gymnothorax undulatus (Anguilliformes: Muraenidae) in the Western Indian Ocean, with description of a new species. Zootaxa 4767(1):161-181. (Ref. 123145)
IUCN Red List Status (Ref. 130435: Version 2024-2)
Threat to humans
Harmless
Human uses
Fisheries: of potential interest
Tools
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Internet sources
Estimates based on models
Phylogenetic diversity index (Ref.
82804): PD
50 = No PD50 data [Uniqueness, from 0.5 = low to 2.0 = high].
Trophic level (Ref.
69278): 4.0 ±0.6 se; based on size and trophs of closest relatives
Resilience (Ref.
120179): Medium, minimum population doubling time 1.4 - 4.4 years (Preliminary K or Fecundity.).
Fishing Vulnerability (Ref.
59153): Moderate to high vulnerability (48 of 100).