Yellowmouth moray (Gymnothorax nudivomer)
Source-cited species reference: taxonomy from WoRMS, biology from FishBase, occurrence map from GBIF, conservation from IUCN Red List.
Last updated
Diego Delso · via Wikipedia: Gymnothorax nudivomer · CC BY-SA 4.0
Yellowmouth moray (Gymnothorax nudivomer) is a marine species in the family Muraenidae (Chordata › Teleostei › Anguilliformes), recorded in the World Register of Marine Species as Gymnothorax nudivomer (Günther, 1867) under AphiaID 217488.
Scientific classification
- KingdomAnimalia
- PhylumChordata
- ClassActinopterygii
- DivisionTeleostei
- OrderAnguilliformes
- FamilyMuraenidae
- GenusGymnothorax
- SpeciesGymnothorax nudivomer
Named by (Günther, 1867)
Close relatives
Other species of Gymnothorax with a Codexery entry.
- Abbott's moray eel Gymnothorax eurostus
- Blackcheek moray eel Gymnothorax breedeni
- Brown speckled eel Gymnothorax steindachneri
- California moray Gymnothorax mordax
- Fimbriated moray Gymnothorax fimbriatus
- Gymnothorax griseus
- Gymnothorax javanicus
- Gymnothorax funebris
Sources: Wikipedia taxobox: Gymnothorax nudivomer (CC BY-SA 4.0) · order, family and genus agree with WoRMS AphiaID 217488 (CC BY 4.0)
Conservation status
Least Concern (LC)
- LC▲ this species
- NT
- VU
- EN
- CR
- EW
- EX
Source: IUCN Red List assessment · GBIF copy of the Red List category
How big is it?
Largest length in the source, 1.8 m, next to a 1.8 m person.
Diagram: drawn by Codexery, schematic shapes to scale (not a likeness). Length: Wikipedia: Gymnothorax nudivomer
Where the yellowmouth moray (gymnothorax nudivomer) has been recorded
Each dot is a place where the species has been observed and reported (309 records, half-degree grid) — not a modelled range. 6 inland records left out (institution coordinates).
Map: drawn by Codexery. Data: GBIF occurrence search (records CC0 / CC BY) · Natural Earth basemap (public domain) · place coordinates: Wikipedia (CC BY-SA 4.0)
Classification (WoRMS)
Full classification as recorded by WoRMS: Kingdom: Animalia · Phylum: Chordata · Class: Teleostei · Order: Anguilliformes · Family: Muraenidae · Genus: Gymnothorax.
Accepted name: Gymnothorax nudivomer · Authority: (Günther, 1867) · Taxonomic status: accepted · AphiaID: 217488.
Synonyms and superseded combinations recorded for this taxon: Gymnothorax insignis Seale, 1917; Gymnothorax xanthostomus Snyder, 1904; Lycodontis nudivomer (Günther, 1867); Muraena nudivomer Günther, 1867.
Source: World Register of Marine Species (WoRMS) — https://www.marinespecies.org/aphia.php?p=taxdetails&id=217488 (CC BY 4.0). Accessed 2026-09-25.
Biology and life history (FishBase)
Measured values published by FishBase for Gymnothorax nudivomer. Only fields the database actually holds for this species are shown; these are database values, not aquarium guidance.
Maximum length: 180 cm · Depth range: 2–271 m · Habitat zone: reef-associated · Body shape: eel-like · Vulnerability index: 90 of 100 · Fishery importance: of potential interest · Aquarium trade: commercial.
FishBase notes: Mainly in oceanic locations (Ref. 48635). Adults are found inhabiting inner and outer reef slopes (Ref. 30404). Benthic (Ref. 58302). Mucus is toxic (Ref. 1602).
Source: FishBase species summary (SpecCode 7465) — https://www.fishbase.se/summary/Gymnothorax-nudivomer.html (CC BY-NC 3.0 — non-commercial use only). Accessed 2026-09-25.
Distribution and occurrence records (GBIF)
309 georeferenced occurrence records for Gymnothorax nudivomer are published through GBIF from 29 countries or marine areas. The map above plots 80 distinct locations from a sample of 309 records, omitting 6 inland records that carry an institution's coordinates rather than a collection site; it shows where the species has been observed and reported, not a modelled range.
Most records by country or area: South Africa (73); Egypt (42); Oman (42); Israel (39); Réunion (14); Australia (13); Mozambique (13); United States of America (10); Mauritius (8); Chinese Taipei (7); New Caledonia (6); Indonesia (5); Japan (5); Maldives (5); Tanzania, United Republic of (4).
Marine regions with a valid WoRMS distribution record: Mozambican Exclusive Economic Zone; Tanzanian Exclusive Economic Zone; Red Sea; East Africa; Réunion Exclusive Economic Zone; Seychellois Exclusive Economic Zone; Somali Exclusive Economic Zone; South Africa (country); Mauritian Exclusive Economic Zone.
Source: GBIF Occurrence Search (taxonKey 2404012) — https://www.gbif.org/occurrence/search?taxon_key=2404012&has_coordinate=true (records CC0 / CC BY); WoRMS distribution records (MarineRegions) — https://www.marinespecies.org/aphia.php?p=taxdetails&id=217488 (CC BY 4.0); Natural Earth 110m basemap — https://www.naturalearthdata.com/ (public domain). Accessed 2026-09-25.
Conservation status (IUCN Red List)
The IUCN Red List assesses Gymnothorax nudivomer (Günther, 1867) as Least Concern (code LC). No trend, population estimate or threat analysis is given here, because none is available from this source without the Red List API; follow the source link for the full assessment, including its date.
Source: IUCN Red List of Threatened Species (taxon 195768) — https://www.iucnredlist.org/species/195768/0; GBIF IUCN Red List category endpoint (taxonKey 2404012) — https://api.gbif.org/v1/species/2404012/iucnRedListCategory. Accessed 2026-09-25.
Sources
Compiled from Wikipedia and the sources listed below. Text from Wikipedia is available under CC BY-SA 4.0; this entry is adapted from it.
- Wikipedia: Gymnothorax nudivomer (CC BY-SA 4.0).
- Classification: the source article's taxobox; order, family and genus checked against WoRMS, the World Register of Marine Species (CC BY 4.0).
- Conservation status: IUCN Red List assessment.
- Occurrence records: GBIF (CC0 / CC BY). Basemap: Natural Earth (public domain).
- Biology values: FishBase species summary (CC BY-NC 3.0, non-commercial).
- Word definitions: the , each quoted from its Wikipedia article.
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