How to Identify Twospot Snapper

To identify Twospot Snapper (Lutjanus bimaculatus), look at these key features.

Physical Characteristics

Body shape

compressed

Coloration

Body color ranges from reddish-orange to reddish-brown, often with a lighter, sometimes silvery, belly. Fins are typically reddish. Juveniles and sub-adults prominently display two distinct white spots on the upper flank, below the soft dorsal fin. These spots may be less pronounced or absent in larger adults. Some individuals may exhibit faint horizontal stripes.

Scale type

ctenoid

Mouth position

terminal

Distinctive features

Two prominent white spots on the upper flank (often fading with age), Deep body, moderately compressed, Large mouth with canine teeth, Reddish-orange to reddish-brown overall coloration

Dorsal fin

Single dorsal fin with 10 spines and 13-14 soft rays. The spinous and soft-rayed portions are continuous.

Tail fin

Slightly emarginate to truncate caudal fin.

Pectoral fin

Long pectoral fins, typically reaching to or beyond the anus, with 16-17 rays.

Distinctive fins

Anal fin with 3 spines and 8-9 soft rays. Pelvic fins are relatively short.

Identification Tips

1. 1

   Coloration

   Look for the reddish-orange to reddish-brown body. The presence of two white spots on the upper flank is a key identifier, especially in younger individuals.

2. 2

   Body Shape

   Note the deep, compressed body typical of snappers.

3. 3

   Fin Structure

   Observe the continuous dorsal fin with 10 spines and 13-14 soft rays, and the slightly emarginate caudal fin.

4. 4

   Mouth and Teeth

   The large mouth with prominent canine teeth is characteristic of predatory snappers.

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