How long does it take for tadpoles to grow hind legs and front legs? Ask god for help

after frogs lay their eggs by the water, after a period of time, the eggs will hatch into tadpoles and feed on algae and plankton in the water. About a month and a half later, the root of the tadpole's tail began to swell, and a week later, hind legs grew, then the forelimbs began to take shape and the tail shortened at the same time. At this time, the little tadpole became a little frog. Frog's body is short and flat, with no neck and tail, prominent eyeballs, moist and smooth skin, long and strong hind legs and good jumping. Most frogs will live in dark and damp corners under trees and like to eat small insects. Feeding and management of tadpoles The newly hatched tadpoles like to cluster together and attach themselves to egg membranes or aquatic plants. At this time, the water temperature should be kept at 23-25 C. Within 5-7 days, tadpoles have weak adaptability to the external environment and the highest mortality rate. Lack of oxygen in water, excessive water quality and sudden change of water temperature can all cause a large number of tadpoles to die or even all of them. If the film is picked up at this time, tadpoles are also prone to death and dysplasia, slow growth and weak constitution. It is best to keep tadpoles in the original incubation pond for 7-1 days and then transfer them to the tadpole pond for breeding, which can improve the rate of sea formation. Tadpoles are still small when they are transferred to the pool, and their swimming ability is poor. They must rely on suction cups to rest, and more branches and aquatic plants should be put in the pool. After tadpoles give birth to hind limbs, they like to perch under the mud or grass-roots leaves at the bottom of the water. In the low-pressure and sultry weather on the eve of the storm, tadpoles are very restless, swimming vertically up and down to the surface for air or swimming with their bellies up and their mouths out of the water. In stagnant water, tadpoles lose their appetite and don't swim much because of lack of oxygen in the water. Pay attention to the change of water quality and keep the water temperature at 23-25 C. If the water is unclean or the pH is too high, tadpoles are in danger of death. During the observation, if it is found that two thirds of tadpoles in the whole pond are floating on the water surface and refuse to go deep into the bottom, and they are in poor spirits and unable to swim, it means that the temperature is too high or the plankton in the water is too dense, which affects the water quality, the water is unclean, or the oxygen in the water is insufficient, etc., and new water should be replaced in time, and the residual bait should be cleaned in time to avoid the danger of death. Tadpoles should pay special attention to new feed, and at the same time, they should be supplied according to the different growth periods of tadpoles. After 5 days, they can start to eat phytoplankton, and they can supply some soybean milk, a small amount of egg yolk, Daphnia, spinach, papaya, tomatoes and zooplankton in the water twice a day, but the amount of egg yolk should not be too much, so as not to affect the water quality. You can also feed some dung maggots in the toilet or maggots bred by sand head fish. Animal feed and plant feed should increase each other. Concentrate can be added. Corn and wheat bran are cooked into a paste at 1: 2 and fed together in plant feed, 3-4 times a day. After a month, the feed can be thicker, such as watermelon skin, rotten pumpkin, tomato and other feed. In addition, we should start feeding some mixed feed, and the formula adopted is: rapeseed cake (powder) 6%, rice bran (or wheat bran) 3%, soybean powder 5%, fish meal 5%, and the daily dosage is 5 grams per 1. Animal feed consists of Daphnia, red worms, snails, dead fish and rotten meat. Animal feed should be chopped and put on the feed table, and powder feed can be directly distributed. The feed table is made of wooden boards and placed at a depth of 1 cm. In addition, Chlorella can be cultivated, fertilized and fertilized, and plankton can be cultivated for natural feeding. Chlorella is rich in nutrients, containing about 4-5% of protein, which is equivalent to two parts of peanuts and five times of eggs. Known as "pork in water". Its reproduction is also very fast, and it can reproduce 1-1 times in one day and night, so it is an ideal feed for raising tadpoles. Under the condition of 18-28 C, the feed supply was normal, and the hind legs of frogs began to grow 2 days after hatching. After about 5 days, the forelimbs grow again. At this time, the tadpoles stop eating and feed by absorbing the tail. At the same time, the tail and gills degenerate and begin to put their heads out of the water and breathe with their lungs. After about 1 days, the frog's tail was absorbed and began to land. At this time, going back to the water is not diving, but swimming on the surface. The whole tadpole period is 6 days.