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Hemigymnus sexfasciatus  (Rüppell, 1835)

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Native range | All suitable habitat | Point map | Year 2100
This map was computer-generated and has not yet been reviewed.
Hemigymnus sexfasciatus   AquaMaps   Data sources: GBIF OBIS
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Hemigymnus sexfasciatus
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drawing shows typical fish in this Family.

Classification / Names Common names | Synonyms | Catalog of Fishes (gen., sp.) | ITIS | CoL | WoRMS | Cloffa

Actinopterygii (ray-finned fishes) > Perciformes (Perch-likes) > Labridae (Wrasses) > Corinae
Etymology: Hemigymnus: Greek, hemi = half + Greek, gymnos = naked (Ref. 45335).

Environment / Climate / Range Ecology

Marine; reef-associated; depth range 1 - 20 m (Ref. 93095).   Tropical

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

Western Indian Ocean: Red Sea, Gulf of Tadjoura, east in the Gulf of Aden at least to Sikha Island, southwest of Al Mukallah, Yemen.

Size / Weight / Age

Maturity: Lm ?  range ? - ? cm
Max length : 36.5 cm TL male/unsexed; (Ref. 93095)

Short description Morphology | Morphometrics

This species is distinguished by the following set of characters: gill rakers 20-23 (rarely 23); long pelvic fins, reaching anus in mature females and to or beyond origin of anal fin in males, one to spinous portion of fin; small juveniles are dark green, mottled with light yellowish green, with a white bar from anterior part of dorsal fin to abdomen, 4 faint narrower bars posteriorly, a pale bar on nape, 2 ventrally on chest; larger juveniles are dark brown with more distinct pale yellow bars; body of small females black with 5 white bars, progressively narrower posteriorly, the last posteriorly on caudal peduncle faint, the first two expanding ventrally; head white with a curving black bar from nape to eye; snout and interorbital are green with irregular pink bands radiating from eye; pectoral-fin rays yellow, membranes transparent; female in the process of sex change, indicated by the golden scale centers dorsally on the first dark bar of the body and on the dark olive bar of the nape; pelvic fins pale blue with orange streaks; body of males dark green, with spindle-shaped scales edged in light green; three pale gray bars on anterior two-thirds of body that broaden ventrally, the scale edges narrowly light green; first dark bar on body, ending at base of pectoral fin, with green margins and vertically elongate golden centers, many merging above and below, more as irregular vertical green and golden lines than as scale patterns; curving dark green bar of nape with golden scale centers, merging with a broad light yellowish brown band with irregular green bands that passes through eye onto snout; cheek with a broad near-white area, sparsely and faintly spotted with green, shading ventrally to blue; upper lip mainly greenish yellow; chest and abdomen pale blue with orange scale centers; pectoral-fin base in a large deep blue spot (Ref. 93095).

Biology     Glossary (e.g. epibenthic)

Occurs on coral reefs and adjacent habitats, especially sand and coral rubble (Ref. 93095).

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

Oviparous, with distinct pairing during breeding (Ref. 205).

Main reference Upload your references | References | Coordinator : Westneat, Mark | Collaborators

Randall, J.E., 2013. Review of the Indo-Pacific labrid fish genus Hemigymnus. J. Ocean Sci. Foundation 6:2-18. (Ref. 93095)

IUCN Red List Status (Ref. 115185)

CITES (Ref. 115941)

Not Evaluated

Threat to humans

  Harmless




Human uses

FAO(Publication : search) | FisheriesWiki |

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Internet sources

BHL | Cloffa | Websites from users | Check FishWatcher | CISTI | Catalog of Fishes (gen., sp.) | DiscoverLife | ECOTOX | Faunafri | Fishes of Iran | Fishtrace | GenBank(genome, nucleotide) | GloBI | GOBASE | Google Books | Google Scholar | Google | IGFA World Record | MitoFish | Otolith Atlas of Taiwan Fishes | PubMed | Reef Life Survey | Scirus | SeaLifeBase | Tree of Life | Wikipedia(Go, Search) | World Records Freshwater Fishing | Zoological Record

Estimates of some properties based on models

Preferred temperature (Ref. 115969): 26.9 - 29.2, mean 28.2 (based on 249 cells).
Phylogenetic diversity index (Ref. 82805):  PD50 = 0.6250   [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.01000 (0.00481 - 0.02077), b=3.06 (2.88 - 3.24), in cm Total Length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245).
Trophic Level (Ref. 69278):  3.5   ±0.4 se; Based on size and trophs of closest relatives
Resilience (Ref. 69278):  Medium, minimum population doubling time 1.4 - 4.4 years (Preliminary K or Fecundity.).
Vulnerability (Ref. 59153):  Moderate vulnerability (37 of 100) .