Dwarf Pufferfish Identification Guide

Key identification features

• Tiny size, typically only 2-2.5 cm (about 1 in) long, among the smallest pufferfish in the world
• Yellowish-green to olive body covered in dark brown speckles or leopard-like spots
• Rounded, tailless-looking body shape typical of pufferfish
• Males often show a darker stripe or keel line along the belly and more saturated color
• Females are rounder-bodied with a paler, cream-colored belly
• No pelvic fins; propulsion mainly from small pectoral and dorsal/anal fins

Common look-alikes

• Other small Carinotetraodon species: distinguished mainly by the Dwarf's much smaller adult size and denser, finer speckled pattern across the body.
• Juvenile larger puffers: any pufferfish this small in freshwater, with a speckled leopard pattern and rounded shape, is almost certainly this species.

Where you'll see one

Endemic to slow-moving freshwater streams, ponds, and vegetated backwaters of southwestern India, particularly the state of Kerala. It favors dense aquatic plant growth, where its mottled coloring provides effective camouflage among submerged leaves and stems while it hunts tiny snails and crustaceans.