How to Identify Red bigeye

To identify Red bigeye (Priacanthus sagittarius), look at these key features.

Physical Characteristics

Body shape

compressed

Coloration

Typically reddish to pinkish-red, often with silvery or whitish blotches or stripes. Fins are usually reddish. Can exhibit rapid color changes depending on mood or environment.

Scale type

ctenoid

Mouth position

superior

Distinctive features

Very large eyes, characteristic of the family Priacanthidae, adapted for nocturnal vision., Deep, compressed body., Oblique mouth with a protruding lower jaw., Caudal fin is truncate to slightly emarginate., Lateral line complete and arched.

Dorsal fin

Single dorsal fin with 10 spines and 12-14 soft rays. The spiny portion is continuous with the soft-rayed portion.

Tail fin

Truncate to slightly emarginate.

Pectoral fin

Relatively small, with 17-19 rays.

Distinctive fins

Pelvic fins are large and inserted anterior to the pectoral fin base, often with a dark membrane between the rays.

Identification Tips

1. 1

   Eyes

   The most prominent feature is the exceptionally large, often red, eye, which is disproportionately large compared to the head.

2. 2

   Body Color

   Predominantly red or reddish-pink, which can vary in intensity. Some individuals may display silvery or mottled patterns.

3. 3

   Body Shape

   Deep and laterally compressed body, giving it a somewhat disc-like appearance when viewed from the front.

4. 4

   Mouth

   An oblique mouth with a distinctly protruding lower jaw.

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