How to Identify Foxface

To identify Foxface (Siganus vulpinus), look at these key features.

Physical Characteristics

Body shape

compressed

Coloration

Bright yellow body with a striking black and white pattern on the head and anterior body, forming a mask-like appearance. A prominent black spot or blotch is often present below the posterior dorsal fin, though this can vary geographically and individually. The fins are typically yellow.

Scale type

ctenoid

Mouth position

terminal

Distinctive features

Elongated, pointed snout resembling a fox's face, Black and white mask-like pattern on the head, Bright yellow body coloration, Venomous dorsal, anal, and pelvic fin spines

Dorsal fin

13 spines, 10 soft rays. The spines are venomous.

Tail fin

Truncate to slightly emarginate.

Pectoral fin

16-17 rays.

Distinctive fins

Pelvic fins have 2 spines and 3 soft rays, a unique configuration (spine-ray-ray-ray-spine) among bony fishes, with the spines being venomous.

Identification Tips

1. 1

   Head Pattern

   The most distinguishing feature is the black and white 'mask' on its face, covering the eyes and extending to the operculum, contrasting sharply with its yellow body.

2. 2

   Body Color

   The vibrant yellow body is consistent across most individuals, though the intensity can vary slightly.

3. 3

   Snout Shape

   Its elongated, pointed snout is characteristic and gives it its common name.

4. 4

   Black Spot

   Many individuals, particularly those previously classified as Siganus unimaculatus (now considered a color morph of S. vulpinus), exhibit a prominent black blotch below the posterior part of the dorsal fin.

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