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Epinephelus polystigma (Bleeker, 1853)

White-dotted grouper
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Epinephelus polystigma
Picture by Randall, J.E.


Papua New Guinea country information

Common names: [No common name]
Occurrence: native
Salinity: freshwater
Abundance: | Ref:
Importance: | Ref:
Aquaculture: | Ref:
Regulations: | Ref:
Uses: no uses
Comments: Museum: Port Moresby, AMS I.9462; KFRS F04037. Popondetta District, mangrove creek flowing to Oro Bay, USNM 272475. New Britain, BMNH 1883.3.11.1. Also Ref.: 4787, 90102, 89707 and 5222.
National Checklist:
Country Information: https://www.cia.gov/library/publications/resources/the-world-factbook/geos/pp.html
National Fisheries Authority: http://www.spc.org.nc/coastfish/Countries/PNG/png.htm
Occurrences: Occurrences Point map
Main Ref: Kailola, P.J., 1987
National Database:

Common names from other countries

分類 / Names 俗名 | 同種異名 | Catalog of Fishes(, ) | ITIS | CoL | WoRMS | Cloffa

Teleostei > Perciformes/Serranoidei (Groupers) > Epinephelidae (Groupers)
Etymology: Epinephelus: Greek, epinephelos = cloudy (Ref. 45335).
  More on author: Bleeker.

Environment: milieu / climate zone / depth range / distribution range 生態學

; 淡水; 半鹹淡水 居於水底的.   熱帶; 20°N - 16°S, 99°E - 164°E (Ref. 5222)

分布 國家 | FAO區域 | 生態系 | 發現紀錄 | Point map | 簡介 | Faunafri

Asia and Oceania: Andaman Is., Indonesia, Philippines, Papua New Guinea, New Ireland, Australia and the Solomon Islands.
亞洲與大洋洲: 印尼,菲律賓,巴布亞新幾內亞,新愛爾蘭與索羅門群島。

大小 / 重量 / 年齡

Maturity: Lm ?  range ? - ? cm
Max length : 48.0 cm TL 雄魚/尚未辨別雌雄; (Ref. 89707)

簡短描述 檢索表 | 型態特徵 | 形態測量圖

背棘 (總數) : 11; 背的軟條 (總數) : 15 - 16; 臀棘: 3; 臀鰭軟條: 8. Distinguished by the following characteristics: dark brown to nearly blackish color; fins with small white to yellowish-white dots; weakly ctenoid scales on body except cycloid anteriorly above lateral line, on thorax and abdomen; body with auxiliary scales; greatest depth of body 2.6-3.0 in SL; rounded caudal fin; pelvic fins, 1.9-2.2 in head length (Ref. 90102); head length 2.3-2.7 times in SL; flat interorbital area; short snout, length subequal to eye diameter; preorbital depth less than greatest width of upper lip; rounded preopercle, finely serrate, serrae at angle slightly enlarged; upper edge of operculum mostly enlarged; funnel-shaped anterior nostrils, rear margin expanded as a flap reaching posterior nostril; posterior nostril diameter 2-4 times larger than anterior nostril diameter; maxilla reaches past vertical at rear edge of eye, lower edge with rounded step at front of widest part; 2-3 rows of small subequal teeth on midlateral part of lower jaw; presence of 2 short stout canines at front of both jaws; pyloric caeca 8 (Ref. 89707).

生物學特性     字彙 (例如 epibenthic)

Found in estuaries (Ref. 75154). Usual habitat seems to be mangrove areas (Ref. 5222). Benthic (Ref. 75154). Forms large aggregations in shallow waters of river mouths and brackish mangrove regions throughout the year, prior to new moon (Ref. 89707).

平常的棲息地似乎是紅樹林區域。 19 公分 SL 母標本從菲律賓被發現成熟的。

Life cycle and mating behavior Maturities | 繁殖 | Spawnings | Egg(s) | Fecundities | 仔魚

亞洲與大洋洲: 印尼,菲律賓,巴布亞新幾內亞,新愛爾蘭與索羅門群島。

主要參考資料 Upload your references | 參考文獻 | 合作者 | 合作者

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)

IUCN 瀕危狀態 (Ref. 130435)

  無危 (LC) ; Date assessed: 22 November 2016

CITES (Ref. 128078)

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

對人類具威脅

  無害處的




人類使用

漁業: 自給性漁業
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=0.01175 (0.00571 - 0.02419), b=3.04 (2.88 - 3.20), in cm Total Length, based on LWR estimates for this Genus-body shape (Ref. 93245).
營養階層 (Ref. 69278):  3.8   ±0.6 se; based on size and trophs of closest relatives
回復力 (Ref. 120179):  中等的, 族群倍增時間最少 1.4 - 4.4年 (Preliminary K or Fecundity.).
Fishing Vulnerability (Ref. 59153):  Moderate vulnerability (38 of 100).
價格種類 (Ref. 80766):   Very high.