How to Identify Red Bigeye

To identify Red Bigeye (Priacanthus macracanthus), look at these key features.

Physical Characteristics

Body shape

compressed

Coloration

Typically reddish to silvery-red, often with irregular blotches or spots that can vary in intensity. Some individuals may exhibit a more uniform red or pinkish hue. The fins are usually reddish, sometimes with darker margins.

Scale type

ctenoid

Mouth position

superior

Distinctive features

Very large eyes, characteristic of the family Priacanthidae, adapted for low-light conditions., Deep, compressed body., Large, oblique mouth., Rough, ctenoid scales., Pelvic fins are large and often blackish, especially towards the tips, and are inserted anterior to the pectoral fins.

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

Caudal fin is slightly emarginate to truncate.

Pectoral fin

Pectoral fins are relatively small.

Distinctive fins

Pelvic fins are notably large, often dusky or blackish, and are inserted anterior to the pectoral fins. Anal fin has 3 spines and 12-14 soft rays.

Identification Tips

1. 1

   Eyes

   The most striking feature is the exceptionally large, often reddish, eyes. This is a key characteristic of all bigeyes (Priacanthidae).

2. 2

   Coloration

   Observe the overall reddish to silvery-red body color. Look for any irregular blotches or spots, which can be present but vary.

3. 3

   Body Shape

   Note the deep, compressed body, which gives it a somewhat disc-like appearance when viewed from the front.

4. 4

   Pelvic Fins

   The large, often dusky or black-tipped pelvic fins, inserted anterior to the pectoral fins, are a good distinguishing feature.

5. 5

   Fin Ray Count

   For definitive identification, count the dorsal fin spines (10) and soft rays (12-14), and anal fin spines (3) and soft rays (12-14).

Explore Red Bigeye