The grass puffer (Takifugu niphobles) is a species of fish in the Tetraodontidae family. It is found in Hong Kong, Japan, Taiwan, and Vietnam. It is often caught off beaches, docks, and piers using various baits such as worms, shrimp, sea lice, or cut fish. They are popular for children to catch and possibly in aquarium trade, but cannot be eaten on account of fatal tetrodotoxin (pufferfish poison) which can cause heart problems, kidney failure, and a coma that can be mistaken for death. Puffer is prepared as fugu by chefs with a Fugu License. The grass puffer is a common fish caught in Japan but is inedible unless the toxin bearing organ is removed.