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Image of White-dotted grouper
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White Dotted Grouper

Epinephelus polystigma (Bleeker 1853)

Diagnostic Description

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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).
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Recorder
Rodolfo B. Reyes
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Morphology

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Dorsal spines (total): 11; Dorsal soft rays (total): 15 - 16; Analspines: 3; Analsoft rays: 8
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Rodolfo B. Reyes
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Trophic Strategy

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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).
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Recorder
Christine Marie V. Casal
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Biology

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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).
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Recorder
Estelita Emily Capuli
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Importance

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fisheries: subsistence fisheries
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Recorder
Estelita Emily Capuli
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