The dwarf pufferfish (Carinotetraodon travancoricus), also known as the Malabar pufferfish (leading to easy confusion with the related C. imitator), pea pufferfish or pygmy pufferfish, is a small, freshwater pufferfish endemic to the River Pamba in Kerala, Southwest India. The maximum documented size is 30 mm (less than 1.25 inches), making it one of the smallest pufferfish in the world. Although closely related to marine pufferfish, they are not found in brackish or salt water, and reports to the contrary may be based on misidentification.