How to Identify Dogface Pufferfish

To identify Dogface Pufferfish (Arothron nigropunctatus), look at these key features.

Physical Characteristics

Body shape

rounded

Coloration

Highly variable. Common color morphs include grey, brown, yellow, orange, and black. Often features scattered black spots, particularly on the dorsal and caudal regions. The 'dog-face' area around the mouth is typically darker, often black or dark brown, contrasting with the body color. Some individuals can be entirely black or yellow. The fins are generally translucent or match the body color.

Scale type

none

Mouth position

terminal

Distinctive features

Prominent, fleshy snout resembling a dog's face., Small, widely spaced black spots over the body, though their density and presence can vary significantly., Ability to inflate its body into a spherical shape when threatened., Absence of pelvic fins., Strong, beak-like teeth formed by fused dental plates.

Dorsal fin

Single, small, and rounded, positioned far back on the body, typically with 9-11 soft rays.

Tail fin

Truncate to slightly rounded, relatively small compared to body size.

Pectoral fin

Small and rounded, positioned laterally, used for maneuvering.

Distinctive fins

No pelvic fins. All fins are soft-rayed.

Identification Tips

1. 1

   Facial structure

   The most distinguishing feature is the prominent, fleshy snout that gives it its 'dogface' moniker. This area is often darker than the rest of the body.

2. 2

   Coloration and spotting

   While highly variable, look for scattered black spots, especially on the back and tail. The overall body color can range from grey to bright yellow or orange, or even entirely black.

3. 3

   Body shape

   When not inflated, it has a robust, somewhat rounded body. The absence of pelvic fins is also a key characteristic of pufferfish.

4. 4

   Size

   Adults typically reach a maximum length of about 33 cm (13 inches), though some individuals can grow up to 35 cm (14 inches).

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