Carinotetraodon travancoricus, commonly known as the pea pufferfish, is a tiny freshwater species native to the rivers of southwest India. It features a distinctive rounded body and vibrant patterns that aid in camouflage. Notable for its inquisitive nature, this species exhibits unique puffing behavior when threatened. Pea pufferfish are primarily carnivorous, preying on small invertebrates, and play a crucial role in controlling pest populations in their aquatic ecosystem.

Carinotetraodon travancoricus, commonly known as the Dwarf Pufferfish or Pea Pufferfish, is native to the Western Ghats of India. Specifically, it is found in the states of Kerala and Karnataka.

This species inhabits freshwater environments such as rivers, streams, and lakes. The water is typically slow-moving and may be part of floodplains. The typical climate is tropical with a monsoon season, characterized by warm temperatures and high humidity.

Carinotetraodon travancoricus occupies the ecological niche of a small, freshwater predator. It feeds primarily on small invertebrates, including snails and worms. Its small size and adaptability allow it to thrive in densely vegetated areas where it can hunt for food and hide from predators.