How to Identify Malabar Pufferfish

To identify Malabar Pufferfish (Tetraodon travancoricus), look at these key features.

Physical Characteristics

Body shape

rounded

Coloration

Typically yellowish-green to olive-brown on the dorsal side, fading to a lighter, often whitish, ventral side. The body is adorned with irregular dark spots or blotches, which can vary in intensity and pattern between individuals. Some specimens may exhibit iridescent patches.

Scale type

none

Mouth position

terminal

Distinctive features

Small size, typically reaching only 2.5-3.5 cm (1-1.4 inches) in length., Absence of pelvic fins., Ability to inflate their bodies with water or air when threatened., Beak-like mouth with fused teeth., Lack of scales, skin is smooth but may have small dermal spines (spicules) that are usually not visible unless inflated.

Dorsal fin

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

Tail fin

Rounded to truncate, providing quick bursts of movement.

Pectoral fin

Small and fan-like, used for precise maneuvering; typically with 15-18 soft rays.

Distinctive fins

No pelvic fins. Anal fin is small and located opposite the dorsal fin, with 7-9 soft rays.

Identification Tips

1. 1

   Size

   Its exceptionally small adult size (1-1.4 inches) immediately distinguishes it from most other pufferfish species.

2. 2

   Coloration and Pattern

   The yellowish-green to olive body with irregular dark spots is characteristic. The spots are typically more pronounced on the dorsal and lateral surfaces.

3. 3

   Fin Arrangement

   The absence of pelvic fins and the small, posteriorly placed dorsal and anal fins are key features of pufferfish, and specifically this species.

4. 4

   Geographic Origin

   Knowing its endemic range in the Western Ghats of India helps confirm identification if encountered in the wild or if provenance is known.

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