How to Identify Blackspot Snapper

To identify Blackspot Snapper (Lutjanus ehrenbergii), look at these key features.

Physical Characteristics

Body shape

compressed

Coloration

Generally silvery-grey to brownish-red on the back, fading to silvery-white on the belly. Fins are typically yellowish to dusky. Juveniles often have more pronounced banding or mottling.

Scale type

ctenoid

Mouth position

terminal

Distinctive features

A prominent, round to oval black spot on the lateral line, below the anterior part of the soft dorsal fin rays. This spot is typically larger than the eye., Relatively large eyes., A moderately deep body., Slightly emarginate (forked) caudal fin.

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 (forked) caudal fin.

Pectoral fin

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

Distinctive fins

Anal fin with 3 spines and 8 soft rays. Pelvic fins with 1 spine and 5 soft rays.

Identification Tips

1. 1

   Black Spot

   The most definitive feature is the prominent black spot on the lateral line, below the anterior soft rays of the dorsal fin. This spot is usually larger than the eye.

2. 2

   Body Coloration

   Observe the overall silvery-grey to brownish-red body, fading to white ventrally. Fin coloration can also be a clue, often yellowish.

3. 3

   Fin Count

   Count the dorsal fin spines (10) and soft rays (13-14), and anal fin spines (3) and soft rays (8) for confirmation, though this requires close examination.

4. 4

   Habitat

   Consider the habitat; its presence in estuaries and even freshwater can distinguish it from some other reef-dwelling snappers.

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