How to Identify Dog Snapper

To identify Dog Snapper (Lutjanus novemfasciatus), look at these key features.

Physical Characteristics

Body shape

torpedo

Coloration

Adults typically exhibit a dark reddish-brown to greyish-brown coloration dorsally, fading to a lighter, often reddish or coppery hue ventrally. Juveniles may display faint vertical bars or blotches that fade with age. Fins are often dark, sometimes with reddish tints. The most distinctive feature is the presence of two prominent, large canine teeth in the upper jaw, which are visible even when the mouth is closed.

Scale type

ctenoid

Mouth position

terminal

Distinctive features

Two prominent, large canine teeth in the upper jaw, visible when mouth is closed., Robust, deep body., Pointed snout., Large mouth extending to below the eye., Absence of a deep groove or pit on the preopercle (cheek bone).

Dorsal fin

Single dorsal fin with 10 spines followed by 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.

Distinctive fins

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

Identification Tips

1. 1

   Canine Teeth

   Look for the two prominent, large canine teeth in the upper jaw that protrude even when the mouth is closed. This is a key distinguishing feature from many other snapper species.

2. 2

   Body Shape and Coloration

   Note the robust, deep body and the dark reddish-brown to greyish-brown dorsal coloration. The absence of distinct spots or stripes (in adults) helps differentiate it from some other snappers.

3. 3

   Preopercle

   Examine the preopercle (cheek bone). Lutjanus novemfasciatus lacks a deep groove or pit on the preopercle, which is present in some other snapper species.

4. 4

   Fin Length

   Observe the pectoral fins; they are relatively long, often reaching to or beyond the anus.

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