Takifugu rubripes is a marine pufferfish species in the family Tetraodontidae, native to coastal waters of the northwest Pacific Ocean, particularly around Japan, Korea, and China. The genus name Takifugu combines the word taki (waterfall) and the word for pufferfish (fugu), while the species epithet rubripes derives from Latin ruber (“red”) and pes (“foot”), referring to the reddish coloration sometimes observed on the fins. This species is widely known as the Japanese pufferfish or tiger puffer and is one of the most famous and economically important species used to prepare the delicacy known as fugu in Japanese cuisine.

Takifugu rubripes inhabits coastal and offshore waters, estuaries, and sandy seabeds where it feeds on benthic invertebrates such as crustaceans, mollusks, and small fish. Like other pufferfish, it possesses the ability to inflate its body by rapidly ingesting water or air, a defensive behavior that makes it difficult for predators to swallow. The fish also has powerful beak-like teeth formed by fused dental plates that allow it to crush hard-shelled prey. It can reach lengths of around 60–80 centimeters and has a robust body with mottled coloration that provides camouflage against the seafloor.

As a food source, Takifugu rubripes is highly prized in Japanese cuisine for its delicate, mild-flavored flesh and unique texture. It is commonly served as thinly sliced sashimi (fugu sashimi or tessa), hot pot dishes (fugu nabe or tecchiri), grilled preparations, and fried items. The skin and fins may also be used in certain dishes or infused into beverages such as warmed sake. However, the species is also well known for containing potent neurotoxins, particularly tetrodotoxin, which are concentrated in organs such as the liver, ovaries, and skin. These toxins block voltage-gated sodium channels in nerve cells, leading to paralysis and potentially fatal respiratory failure if consumed in sufficient quantities.

Nutritionally, the edible flesh of Takifugu rubripes is high in protein and low in fat, containing essential amino acids and small amounts of omega-3 fatty acids. It also provides minerals such as potassium and phosphorus. Because of the risk associated with tetrodotoxin, the preparation of Takifugu rubripes for food is strictly regulated in Japan and several other countries. Only licensed chefs who have undergone specialized training are permitted to process and serve the fish, ensuring that toxic organs are carefully removed and discarded. When properly prepared, the edible muscle tissue is considered safe and is valued for its clean flavor and firm, slightly chewy texture.