1. The appearance is different. The turtle is dark green in color and oval in shape, flatter than the turtle. Its dorsal and ventral carapace is covered with a soft outer membrane and is surrounded by a delicate skirt. Judging from the appearance and color, the turtle's back and limbs are usually dark green, and some The back is light brown and the belly is white and red. The appearance of the sand turtle is approximately round, with the back bulging along with the spine. The epidermis is olive green or earthy yellow, and the ventral surface is orange-red with clear and symmetrically arranged black patches.

2. The living environment is different. Turtles mainly live in lakes, ponds, reservoirs, delta bays and slow-flowing rivers. Turtles are temperature-changing animals, amphibious on land and water, and breathe with their lungs. Therefore, there should be enough land beach around or in the center of the turtle pond for it to carry out land activities. Sand turtles are mainly distributed in Chongzuo in the Zuojiang, Youjiang, Yongjiang, Yujiang and Xijiang river basins of Guangxi. If the weight is less than 150g, the growth rate is slow; if the weight is more than 150g, the growth rate is significantly accelerated.

3. Bone distribution is different. The bony shell of soft-shell turtles has no peripheral bony plates, a highly textured surface, no angular outer bony plates, and a loosely connected belly (pleura). The trunk is slightly oval, the snout is long, the nostrils open at the end of the snout, and there are bony nails on the back. The limbs of the sand turtle are stubby and slightly flat, with five toes and webbed membranes between the toes. The female tail generally does not reach the outer edge of the skirt, while the male body mostly extends beyond the skirt. Some giant turtles can reach more than one meter.

The edge of the skirt at the rear of the body of the sand turtle is golden yellow. There are many warts on the tail skirt, which feel like sand when touched. The warts on the epidermis at the front edge of the carapace are sparse. The abdomen is reddish-yellow, and dense capillaries are clearly visible on the surface of the chest and abdomen. As the individual grows, the dark streak-like black-gray spots on the abdomen gradually fade away.

The body of the turtle is nearly round and thick, with soft edges and thick skirt. Its limbs have five fingers, three of which have claws. Commonly known as "three-clawed turtle and four-clawed turtle", this is the difference between it and the sand turtle. The carapace is grass green or dark green with black spots, the chest and abdomen are yellow with light green markings, and the warts are arranged vertically.

Baidu Encyclopedia - Turtle

Baidu Encyclopedia - Sand Turtle