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Gracila albomarginata (Fowler & Bean, 1930)

Masked grouper
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Native range | All suitable habitat | Point map | Year 2050
This map was computer-generated and has not yet been reviewed.
Gracila albomarginata   AquaMaps   Data sources: GBIF OBIS
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Samoa country information

Common names: [No common name]
Occurrence: native
Salinity: marine
Abundance: | Ref:
Importance: | Ref:
Aquaculture: | Ref:
Regulations: | Ref:
Uses: no uses
Comments: Also Ref. 5222.
National Checklist:
Country Information: https://www.cia.gov/library/publications/resources/the-world-factbook/geos/ws.html
National Fisheries Authority: http://www.spc.org.nc/coastfish/Countries/samoa/samoa.htm
Occurrences: Occurrences Point map
Main Ref: Wass, R.C., 1984
National Database:

Common names from other countries

Classificatie / Names Lokale namen | Synoniemen | Catalog of Fishes(Genus, Soort(en)) | ITIS | CoL | WoRMS | Cloffa

> Perciformes/Serranoidei (Groupers) > Epinephelidae (Groupers)
Etymology: Gracila: Latin, gracilis = slender, thin (Ref. 45335).
  More on authors: Fowler & Bean.

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

marien rifbewoner; diepte 0 - 120 m (Ref. 9710), usually 15 - 120 m (Ref. 9710).   Tropical; 29°N - 24°S, 38°E - 144°W (Ref. 5222)

Verspreiding Landen | FAO regio's | Ecosystemen | Voorkomen | Point map | Introducties | Faunafri

Indo-Pacific: northern Mozambique to French Polynesia, north to Okinawa, south to the northern Great Barrier Reef. Unknown from the Red Sea and Persian Gulf. Recorded from Europa Island (MNHN 1992-0983, Ref. 33390).

Grootte / Gewicht / Leeftijd

Maturity: Lm ?  range ? - ? cm
Max length : 40.0 cm TL mannelijk / geslacht onbekend; (Ref. 9710)

Korte beschrijving Determinatiesleutels | Morfologie | Morfometrie

Dorsale stekels (totaal) : 9; Dorsale zachte stralen (totaal) : 14 - 16; Anale stekels: 3; Anale zachte stralen: 9 - 10. Readily identified by the white square on their sides, blue in natural light (Ref. 48635). Differs from all shallow water Micronesian Cephalopholis except C. polleni by having truncate tail (Ref. 37816). Characterized further by: greenish or reddish brown to brownish grey body color , with several narrow curved dark bars on the midlateral part of the body; dark brown spot midlaterally on the caudal peduncle; 3-5 blue lines across head; oblong body, slightly compressed, depth contained 2.6-3.3 times in SL; width of body 1.8-2.3 times in depth; head smaller compared to other groupers, head length 2.9-3.2 times in SL; evenly convex dorsal head profile; slightly convex interorbital area, width greater than eye diameter; narrow preorbital, depth distinctly less than eye diameter, preorbital depth 10-15 times in HL; rounded preopercle, finely serrate, smooth and fleshy lower edge; ventral edge of subopercle and interopercle smooth; posterior and anterior nostril subequal in size; posterior part of maxilla with hook-shaped or step-like expansion on ventral edge in adults; well developed supramaxilla; pair of small canines at front of jaws; presence of palatine teeth; 2 rows of teeth on midside of lower jaw, inner teeth depressible and twice as long as outer teeth (Ref. 89707).

Biologie     Verklarende woordenlijst (bv. epibenthic)

An active swimmer usually found on outer reef slopes and channels adjacent to deep water. Hovers above the bottom and probably feeds primarily on fishes (Ref. 9710). It is uncommon and usually solitary, however Myers (1989, Ref. 4538) reported of occasional sightings of groups of 3 or 4 fish. Solitary, hovering in midwater (Ref 90102). Minimum depth reported taken from Ref. 128797.

Levenscyclus en paargedrag Maturities | Voortplanting | Spawnings | Egg(s) | Fecundities | Larven

Hoofdreferentie Upload your references | Referenties | Coördinator | Medewerkers

Heemstra, P.C. and J.E. Randall, 1993. FAO Species Catalogue. Vol. 16. Groupers of the world (family Serranidae, subfamily Epinephelinae). An annotated and illustrated catalogue of the grouper, rockcod, hind, coral grouper and lyretail species known to date. Rome: FAO. FAO Fish. Synop. 125(16):382 p. (Ref. 5222)

Status op de Rode Lijst van het IUCN (Ref. 130435)

  Niet bedreigd (LC) ; Date assessed: 17 November 2016

CITES (Ref. 128078)

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Gevaar voor de mens

  Harmless




Gebruik door de mens

Visserij: van minder commercieel belang; sportvis: ja
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Estimates based on models

Preferred temperature (Ref. 115969): 22.1 - 28.9, mean 27.2 (based on 604 cells).
Fylogenetische diversiteitsindex (Ref. 82804):  PD50 = 1.0000   [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.01148 (0.00558 - 0.02364), b=3.04 (2.88 - 3.20), in cm Total Length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245).
Trofisch niveau (Ref. 69278):  4.2   ±0.73 se; based on food items.
Weerstandsvermogen (Ref. 120179):  Gemiddeld, minimale populatieverdubbelingstijd 1,4-4,4 jaar (Preliminary K or Fecundity.).
Fishing Vulnerability (Ref. 59153):  Low to moderate vulnerability (30 of 100).
Prijsklasse (Ref. 80766):   Very high.