How to Identify Bigeye Snapper

To identify Bigeye Snapper (Priacanthus arenatus), look at these key features.

Physical Characteristics

Body shape

compressed

Coloration

Typically reddish to pinkish-red, often with silvery or whitish blotches or bars, especially when stressed or at night. Can sometimes be uniformly red or mottled. Fins are usually reddish.

Scale type

ctenoid

Mouth position

terminal

Distinctive features

Very large eyes, characteristic of the family Priacanthidae, adapted for nocturnal vision., Deep, compressed body., Large, oblique mouth with small, conical teeth., Rough, ctenoid scales., A single, continuous dorsal fin.

Dorsal fin

Single dorsal fin with 10 spines and 13-15 soft rays. The spiny portion is longer than the soft-rayed portion.

Tail fin

Slightly emarginate to truncate caudal fin.

Pectoral fin

Relatively small pectoral fins.

Distinctive fins

Pelvic fins are large and often extend beyond the anus, typically blackish or dusky, especially in larger individuals.

Identification Tips

1. 1

   Eyes

   The most prominent feature is its exceptionally large eyes, which are disproportionately large compared to its head size.

2. 2

   Coloration

   Observe the overall reddish to pinkish-red body color. Look for any silvery or whitish blotches, which can be variable.

3. 3

   Body Shape

   Note the deep, compressed body, giving it a somewhat disc-like appearance from the side.

4. 4

   Pelvic Fins

   Check the size and color of the pelvic fins; they are typically large and often dusky or blackish, extending past the anus.

5. 5

   Dorsal Fin

   Count the dorsal fin spines (10) and soft rays (13-15). The spiny part is noticeably longer.

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