First of all, pig-nosed turtle
Pig-nosed turtle is a highly aquatic freshwater turtle, which lives in water all the year round except spawning, so its limbs are specialized into flippers like turtles, which is unique among freshwater turtles. The length of adult tortoise carapace is generally 46-5 1cm, and the weight is generally 18-22Kg. The largest turtle carapace found so far is 56.3 cm long and weighs 22.5 kg. Its shell is round, dark gray, olive gray or brown gray, with a row of white spots near the edge. The edge is slightly serrated, and there is no turtle-like skirt because the exoskeleton is developed and the structure is complete. Instead of a shield, it is a continuous, slightly wrinkled skin. There is a row of spines in the middle of the carapace. The abdominal armour of the body is light, white, milky white or light yellow, slightly cross-shaped. The head is of moderate size and cannot be retracted into the shell. Pig-nosed turtle is one of the most peculiar freshwater turtles. Its nose is long and fleshy, resembling a pig's nose, so it has the reputation of "pig-nosed turtle". There is a gray stripe behind the eyes. Limbs are specialized into fins to adapt to aquatic life, and cannot be shrunk into shells. There are two obvious claw nails near the midpoint of each forelimb, which is also one of its characteristics.
Second, colorful turtles
Seven-color tortoise, also known as Brazilian tortoise, nicknamed "Red-eared tortoise", originated in the United States and was introduced to China in the early 1980s. Its growth rate is extremely fast, and the monthly weight gain of each turtle can reach 125g only in the hot summer season. Its egg production is higher than that of ordinary turtles, and its hatching rate and survival rate are also much higher than that of ordinary turtles.
When swimming from the front, seven colors such as red, yellow, white, brown, green, gray and purple will appear on the head and back armor, which is called "seven-color turtle". There are chrysanthemum petal-shaped radiation patterns on the back shell, which looks like a box of blooming chrysanthemums when standing still in the water; When swimming fast, the black, white and yellow lines in the skin ripple in the water, just like a zebra flying in the water, which is pleasing to the eye. It, green turtle, money turtle and four-eyed turtle are the best ornamental turtles.
Third, Chinese grass turtle.
Chinese turtle (Chinese turtle), also known as tortoise and scarab, belongs to tortoise; It is one of the famous turtles in China. Trionyx sinensis has the advantages of fast growth, strong disease resistance, high meat yield, delicious taste and high ornamental value.
The top of Chinese grass turtle is smooth, the back of its head is covered with granular scales, and the horniness of its beak is weak. The carapace has three longitudinal sides, and all toes are webbed. Wild Chinese turtles live in rivers, lakes, swamps and ponds, dig holes in sunny, cool and loose soil on the shore to lay eggs, and are omnivorous.
Fourth, the money turtle
The head is smooth and scaleless, and the tympanic membrane is obvious and round; Cervical cornual plate is long and narrow, the first cornual plate is pentagonal, the fifth cornual plate is fan-shaped, and the other three cornual plates are triangular, with four costal cornual plates on each side and1/marginal cornual plates on each side; The shell is brown, with three obvious black vertical stripes, and the middle one is the most obvious and the longest, so it is also called Chuanzi turtle. The abdominal nail is black, and its marginal horn plate is yellow; The two sides of the carapace are connected by ligaments, and the plate (carapace) is horizontal, and the carapace is also connected by the transverse ligament between the thoracic horn plate and the abdominal horn plate, so it is also called the broken plate turtle. There are webbed fingers and toes; The tail is short and pointed. The hard skin around the edge of the shell is golden orange, so it is also called red-edged turtle.
The carapace of the female turtle is wide, the tail is thin and short, the base of the tail is thin, the anus is close to the rear edge of the abdominal shell, and the notch formed by the two anal shields of the abdominal shell is shallow. Usually individuals are bigger than males. The carapace of the male turtle is narrow, the tail is thick and long, the base of the tail is thick, the anus is far from the rear edge of the abdominal shell, and the notch formed by the two anal shields of the abdominal shell is deep.
Verb (abbreviation for verb) golden-headed box turtle
Golden-headed box turtle, also known as ten thousand golden turtles, belongs to the species of turtles, hooves and golden-headed box turtles. Golden-headed box turtle is one of the best ornamental turtles in China, with noble posture, bright colors, strong adaptability, gorgeous body color and gentle personality. However, due to its scarcity and narrow distribution, it is extremely difficult to see in the market at present, and there are many buyers, but its wild resources are almost exhausted and need to be protected urgently. Artificial reproduction is the only legal and feasible way. It is distributed in Anhui, China, and has not been reported abroad. The golden head box has a long glans, a golden back, big eyes and a slightly crooked upper jaw. The carapace is reddish brown with yellow spots. The carapace is yellow, and there are basically symmetrical black spots on the shield surface; The back nail and abdominal nail, chest shield and abdominal shield are all connected by ligaments. The back of the limbs is grayish brown, the abdomen is golden yellow, and there are webbed fingers and toes. This kind of turtle belongs to aquatic turtle, which is rich in webbed and can live in deep water.
The male and female identification of the golden-headed box turtle: the female turtle has a blunt snout, the center of the abdominal shell is flat, the cloaca hole is close to the edge of the abdominal shell, and there is no connector in the cloaca; The male kiss is sharp, the center of the abdominal nail is slightly concave, the cloaca hole is far from the edge of the abdominal nail, and the cloaca hole has a black joint.
Life habit of golden-headed box turtle: It lives in mountain streams and crevices in hilly areas and feeds on insects, small fish, shrimps and other animals. Love shadows and be good at climbing.
Six, yellow box turtle
Yellow-edged turtle is also called yellow-edged turtle, golden-headed turtle, splint turtle, humpback turtle and so on. Mainly distributed in Anhui, Henan, Jiangsu, Zhejiang, Guangxi, Hubei, Jiangxi, Hunan, Taiwan Province, Fujian and other places. Yellow-edged box turtle is an excellent variety of soft-shelled turtle, and it is a high-grade nourishing product with high medicinal value and ornamental value.
The yellow-edged box turtle has a smooth and scaleless head, a flat nose and mouth, an obvious hook on the upper beak, a round and clear eardrum, big eyes and a broad golden arc behind the eyes. The carapace is brownish red or brownish brown, with prominent protuberance, waxy ridge in the middle and obvious concentric ring pattern on the dorsal shield. The abdominal nail is flat, round in front and back, and brown or dark brown in color. The outer edge and ventral surface of the edge shield are bright beige. There is a horizontal slot in the middle of the abdominal nail, which divides the abdominal nail into two halves. After the head, tail and limbs are shrunk, the two halves of the abdominal nail can be combined on the dorsal nail. The limbs are flat, with scales on them, and half webbed between fingers (toes) and short tail.
Seven, the green turtle
Green turtle is a precious medicinal and ornamental animal, and its name is contained in Compendium of Materia Medica.
The authentic green turtle system inoculates the body surfaces of water turtles, flat-breasted turtles, spotted turtles, etc., and the length of green hair is more than 4 ~ 5 cm. The "green hair" of the green turtle is a cluster of basal algae with green tassels. There is gold thread in the hair, three ribs on the spine, and ivory armor at the bottom. Other turtles have long hair, but they are big, have no gold thread, and their bottom armor is different in color, including yellow and black.
Eight, Brazil green turtle
Brazilian red-eared turtle has a wide head and a blunt kiss. It has yellow-green longitudinal stripes on its head and neck, and a pair of red stripes behind its eyes. Those are its ears. Its name comes from this. Its carapace is flat, emerald green or apple-colored, with a prominent ridge in the center of its back. There are yellow and green ring stripes on the shield. The net is light yellow, with irregular black round, oval and rod-shaped spots, which are symmetrical left and right. The limbs are light green with taupe longitudinal stripes and webbed between fingers and toes.
Nine, little turtle
Flat-breasted turtle, also known as Eagle-billed Dragon-tailed Turtle, scientifically known as Big-headed Flat-breasted Turtle, commonly known as Eagle-billed Turtle, also known as English Turtle and Dragon-tailed Kirin Turtle, is a peculiar turtle species. Its long tail is like a dragon's tail, with scales, strong and powerful, and its head, eyes and mouth are like parrots. Some people call it parrot turtle, which is very cute. The head is large and triangular, and the back of the head is covered with a large horny hard shell. The upper beak is hooked like an eagle's mouth, with big eyes and no eardrum. The carapace is brown and oval, with a flat center and toothless front and rear edges. The ventral nail is olive-shaped, small and flat, and the dorsal ventral nail is connected by ligaments, and the angle plate is low. The limbs are gray, with flat scales and long hind limbs. In addition to the outer fingers and toes, there are sharp long claws, and there are half webbed fingers and toes, which is not only conducive to crawling on land, but also convenient for swimming in the water.
Crocodile turtle
Crocodile turtle looks like a crocodile, which is a combination of turtle and crocodile, so it is called crocodile turtle. Its head is thick, it can't be completely retracted into the shell, its neck is short and thick, its collar and back are covered with brown thorns, its eyes are small, its mouth and jaw are small, its nose and mouth are sharp, its tail is sharp and long, and its edges are covered with fleshy thorns. The front two thirds of its tail has a scaly ridge with serrated mouth, and its back shell is thin, and its epithelium is mainly brown, occasionally brown, with three stripes on its back.