How to Identify Coral Grouper

To identify Coral Grouper (Plectropomus pessuliferus), look at these key features.

Physical Characteristics

Body shape

torpedo

Coloration

Highly variable, ranging from reddish-brown to orange or bright red, covered with numerous small, dark-edged blue spots over the head, body, and fins. The spots are typically round to oval and can be quite dense. Some individuals may exhibit darker saddles or blotches.

Scale type

ctenoid

Mouth position

terminal

Distinctive features

Elongated, robust body, Large mouth with prominent canine teeth, Numerous small, dark-edged blue spots covering the entire body and fins, Slightly emarginate (indented) caudal fin in adults, Absence of a dark saddle on the caudal peduncle (distinguishes from some other Plectropomus species)

Dorsal fin

Single dorsal fin with 7-8 spines and 10-12 soft rays. The spiny and soft-rayed portions are continuous.

Tail fin

Slightly emarginate to truncate in adults, often with a pale margin.

Pectoral fin

Relatively short and rounded, with 16-18 rays.

Distinctive fins

Pelvic fins are short and located beneath the pectoral fins. Anal fin has 3 spines and 8 soft rays.

Identification Tips

1. 1

   Spotting Pattern

   Look for numerous small, dark-edged blue spots covering the entire body, head, and fins. The spots are generally round to oval.

2. 2

   Caudal Fin Shape

   The caudal (tail) fin is typically slightly emarginate (indented) in adults, distinguishing it from the deeply forked tail of some other Plectropomus species.

3. 3

   Body Coloration

   Observe the base body color, which can vary from reddish-brown to orange or bright red, serving as a background for the blue spots.

4. 4

   Absence of Caudal Peduncle Saddle

   Note the lack of a distinct dark saddle or blotch on the caudal peduncle, a feature present in some similar species like Plectropomus leopardus.

Explore Coral Grouper