How to Identify Whitespotted Grouper

To identify Whitespotted Grouper (Epinephelus coeruleopunctatus), look at these key features.

Physical Characteristics

Body shape

compressed

Coloration

The body coloration is typically dark brown to grayish-brown, often with a purplish or reddish tinge, covered with numerous small, irregular white or pale blue spots. These spots are generally smaller than the pupil of the eye. The fins are usually dark, often with white margins or spots. Juveniles may exhibit more pronounced banding or blotching.

Scale type

ctenoid

Mouth position

terminal

Distinctive features

Numerous small, irregular white to pale blue spots covering the head, body, and fins., Robust body with a large, slightly protruding lower jaw., Dorsal fin with 11 spines and 15-17 soft rays., Anal fin with 3 spines and 8 soft rays., Pectoral fins are relatively long and rounded.

Dorsal fin

Single dorsal fin with 11 strong spines followed by 15-17 soft rays. The spinous and soft-rayed portions are continuous.

Tail fin

Caudal fin is rounded.

Pectoral fin

Pectoral fins are large, rounded, and typically longer than the pelvic fins, with 17-19 rays.

Distinctive fins

Pelvic fins are inserted slightly behind the pectoral fin base.

Identification Tips

1. 1

   Spot Pattern

   Look for numerous small, irregular white or pale blue spots covering the entire body and fins. These spots are generally smaller than the pupil.

2. 2

   Body Shape

   Observe the robust, compressed body and the large mouth with a slightly protruding lower jaw, characteristic of groupers.

3. 3

   Fin Count

   Count the dorsal fin spines (11) and soft rays (15-17) if possible, as this can help differentiate from similar species.

4. 4

   Caudal Fin

   Note the rounded caudal fin, which is a common feature among many Epinephelus species but can be a distinguishing factor from those with truncate or emarginate tails.

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