The "Pork" sold in Japanese stores is actually a mixture of "Mentaiko" and "Whitefish" (as they are called in Japan).

"Mentaiko" is the roe of the pollack fish. Pollack is a marine fish.

The "white fish" called in Japan is actually the "little whitebait" called in China, which is a very small sea fish.

(The "white fish" as it is called in China is a kind of river fish. There are 16 species of white fish, which are endemic to my country. They are mainly distributed in the northwest of Yunnan and Qionghai, Sichuan. It tastes delicious , less spines and more meat, higher nutritional value)

(1) Pollack, pollack

Pork. The fish, whose official name is Theragra chalcogramma (scientific name: Theragra chalcogramma), is a fish of the genus Pollock of the order Codidae, order Theragra, and is distributed on the east coast of the Korean Peninsula and north of the central west side of Honshu, Japan. Sea, Tatar Strait, Sea of ??Okhotsk and Bering Sea periphery, to central California in the United States, as well as in the northern North Pacific, eastern Yellow Sea (very rare) and other sea areas. Yellow-threaded pollock is a near-bottom cold-water marine fish along the northern coast of the North Pacific. Its survival altitude range is -400 to -30 meters. The type origin of this species is on both sides of the Sea of ??Okhotsk and the Kamchatka Peninsula. Koreans call it pollack (Korean: pollack), and it is a fish that the Korean people love to eat. The fish roe is marinated with chili pepper and other spices and is called "mentaiko".

(2) Grunion (called "white fish" in Japan)

Grunion, also called California Grunion, is a small marine food fish. The body is slender, light-colored, 5 to 8 inches (12.5 to 20 cm) long. There is a silver stripe on each side of the body from the gills to the tail. There are no teeth in the mouth. Little whitebaits live only along the coast of Southern California and the Pacific coast of Baja California (Mexico). On certain bright nights between March and August, small whitebait will come ashore with high tide to lay eggs.