Giant salamander (certain introduction)
Giant salamander belongs to our country's national second-class protected aquatic wildlife. Because their cries are very similar to children's cries, they are also called baby fish. Because giant salamanders can be ideally used as medicine after removing the internal organs of birds, they are hunted and killed by humans. Giant salamanders mainly rest in mountain streams and like to live in caves with backflow water.
This is the main species of salamander on the market. Although the mountain stream salamander recorded in the original book is also called salamander, it is a minor species. The body shape is large and flat, the total length of the large ones can reach 1800 mm, and the rare ones are 600-700 mm; the head is extremely flat and broad, the body is strong and flat, the rear end of the tail is flattened laterally, and the tail tip is blunt and rounded. The head is about ten minutes long and wide; the snout is long and the tip of the snout is blunt; the nostrils are very close to the tip of the snout, the eyes are very small in diameter, without eyelids, and are located on the back of the head; the mouth cleft is large, behind the back corners of the eyes, and the upper lip fold does not exceed it. The lower lip fold is clear at the posterior edge of the mouth; there are fine teeth on the left and right jaws; the vomerine teeth are arranged in an arc shape, parallel to the upper jaw, and the tongue is flat and convoluted, adhering to the floor of the mouth. The hands and feet are short and fat. When the body is close to each other, the fingers and toes are far apart, separated by about 6 costal grooves. The fingers and toes are extremely wide, flat and short, with blunt round ends. The bases of the outer four toes are slightly webbed; , the second and third fingers are slightly better than the first and fourth fingers; the fifth toe is in sequence 3, 4, 2, 5, 1; the lateral border membrane of the fourth and fifth toes is very developed. The tail length is 1/3 of the total length. The dorsal fin folds of the tail are high and thick. The bottom of the tail is thick and has no pelvic fin folds. The pelvic fin folds are only obvious around the tail tip. The anal hole is short and slit-like.
The skin is generally smooth, and there are warts on the dorsal and ventral surfaces of the head. These warts are composed of two closely paired small warts. The warts on the snout are more distinct; the warts are obviously arranged in rows. The occipital part reaches forward to the top of the orbit, and a branch at the end of the orbit goes downwards to connect with the warts below the orbit and on the side of the neck; there are also warts along the edge of the lower lip to the back end of the lower lip and then folded toward the pharynx and parallel to the lower lip. There are obvious skin folds from the neck to the body side, and there are two longitudinal rows of large and unpaired warts on the left and right sides of the fold. There are also skin folds on the trailing edge of the limbs, reaching the outer fingers and toes, and the ones on the hind limbs are more developed. There are 12-15 rib grooves on the side of the body.
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