How to Identify Yellowstripe Snapper

To identify Yellowstripe Snapper (Lutjanus lemniscatus), look at these key features.

Physical Characteristics

Body shape

elongated

Coloration

Adults typically have a reddish-brown to purplish-brown body dorsally, fading to a lighter, often silvery-pink or whitish ventral side. A prominent feature is a broad, dark, often blackish or dark brown band or blotch on the caudal peduncle and the base of the caudal fin, which can sometimes extend onto the fin itself. Juveniles often display several narrow, yellowish longitudinal stripes along the flanks, which tend to fade or become less distinct with age, sometimes leaving only a faint yellow wash or disappearing entirely. The fins are generally dusky, with the caudal fin often darker.

Scale type

ctenoid

Mouth position

terminal

Distinctive features

Broad, dark band or blotch on the caudal peduncle and caudal fin base., Relatively deep body for a snapper., Pointed snout., Large eyes., Absence of a distinct black spot on the upper flank below the dorsal fin (unlike some other snappers).

Dorsal fin

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

Tail fin

Slightly emarginate to truncate caudal fin, often with a darker posterior margin or overall dark coloration.

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

   Caudal Peduncle Mark

   Look for the distinctive broad, dark band or blotch on the caudal peduncle and the base of the caudal fin. This is the most reliable identifying feature for adults.

2. 2

   Body Coloration

   Note the reddish-brown to purplish-brown dorsal coloration fading to lighter ventral side. Juveniles may show faint yellow stripes.

3. 3

   Absence of Lateral Spot

   Unlike many other snapper species (e.g., Lutjanus fulviflamma), L. lemniscatus lacks a prominent black spot on the upper flank below the dorsal fin.

4. 4

   Fin Count

   Count the dorsal fin spines (10) and soft rays (13-14), and anal fin spines (3) and soft rays (8-9) for confirmation, though this requires close examination.

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