Pufferfish is poisonous. The puffer fish contains neurotoxins. As we all know, its ovary, liver, blood and kidney all contain highly toxic substances, which damage nerve tissue. Only half a milligram of tetrodotoxin can kill people.

Knife loach fish, slender body, slightly flat front end, flat and thin back anus. The head is long and pointed. The kiss is longer, but not as long as the back of the eye. The tip of the snout protrudes forward into a snout, the length of which is about equal to the diameter of the eye. The front nostril is tubular and located on both sides of the kiss; The back nostril is round, near the front edge. The eyes are located above the head, the surface is covered with thin skin, and there is a barb in front of the eyes, which is buried in the skin.

Misgurnus anguillicaudatus' mouth is in a lower position, and it is divided into triangles, and the corners of the mouth reach or slightly exceed the front of the eyes. There are villous teeth in the upper and lower jaws, which are arranged in bands. The pectoral fin is small and round, without ventral fin, and the dorsal fin and anal fin are connected with the caudal fin respectively. There are 1 row of independent hard spines in front of dorsal fin, about 31-33; There are 3 spines on the gluteal fin; The caudal fin is slightly pointed. The body proportion is small and the lateral line is not significant.

The back is yellowish brown and the abdomen is yellowish. There are two light-colored lines on the head starting from the back of the eye and extending longitudinally along the back of the body to the base of the caudal fin. There are many reticular patterns on the back and ventral side of the body, especially at the base of dorsal fin, gluteal fin and caudal fin, and there are more than 30 brown vertical stripes on the side of the body. In some individuals, the upper ends of stripes are dark black, and in some individuals, short stripes are mixed between stripes near the abdomen. The base of backstab is dark brown, the pectoral fin is light yellow or grayish yellow, the other fins are gray, and the lower edge of the gluteal fin is often decorated with white edges.

Reference materials? Baidu encyclopedia knife autumn rain