How to Identify Green Pufferfish

To identify Green Pufferfish (Tetraodon nigroviridis), look at these key features.

Physical Characteristics

Body shape

rounded

Coloration

Dorsal surface is typically bright green to olive green, covered with irregular black spots of varying sizes. The ventral surface is white to off-white. The intensity and pattern of spots can vary significantly between individuals and populations.

Scale type

none

Mouth position

terminal

Distinctive features

Ability to inflate body when threatened, Beak-like mouth with fused teeth, Absence of pelvic fins, Small, rounded caudal fin, Rough, scaleless skin covered in small spines (spicules) that are usually recumbent but erect when inflated

Dorsal fin

Single, small, and rounded, positioned far back on the body.

Tail fin

Small, rounded, and paddle-like.

Pectoral fin

Small, fan-shaped, and used for precise maneuvering.

Distinctive fins

Absence of pelvic fins. Dorsal and anal fins are set far back, almost opposite each other, providing propulsion.

Identification Tips

1. 1

   Coloration and Spotting

   Look for the characteristic bright green to olive-green body with distinct, irregular black spots. The belly is typically white.

2. 2

   Body Shape

   Rounded, somewhat boxy body shape, capable of inflation.

3. 3

   Mouth

   Observe the prominent, beak-like mouth with fused teeth, indicative of its molluscivorous diet.

4. 4

   Fin Arrangement

   Note the absence of pelvic fins and the small, rounded dorsal, anal, and caudal fins positioned towards the rear of the body.

Explore Green Pufferfish