Tadpoles eat plankton such as water fleas and algae. Under the premise of artificial feed, do tadpoles of different stages eat the same items? The growth stages of tadpoles and what they eat at each stage are as follows:
Early growth stage: (1-10 days) Tadpoles do not look for food within three days after hatching and rely on the nutrients brought from the yolk to protect their lives. Feeding them too early may lead to their death. The amount of activity of tadpoles is significantly reduced at dawn, and they start to feed when the two gill covers are fully formed. They are fed regularly at the rate of one egg yolk per 10,000 tadpoles, and are suitable for adding some natural plankton in the water, such as water fleas and algae. Newly hatched tadpoles are weak and sensitive to external conditions, especially water temperature, water quality, and light. When the water temperature is lower than 20°C or higher than 30°C, there is not enough dissolved oxygen in the water and the pH value is higher than 8 or less than 6 hours will affect the growth of tadpoles and even cause death. Therefore, water quality control requires: constant flow of water, fresh and pollution-free, water temperature maintained at 20-29°C, and pH value 6-8. As the outside temperature changes, adjust the depth of the water in real time, generally 10 to 15cm, and change the pool water once a day. The lighting can be natural indoor light or diffused light under an outdoor pergola. Direct sunlight should be avoided. After 10 days of growth and development, the tadpoles can grow to 1 to 1.5 cm in length.
Early stage of growth: (10-20 days) Since the 10th day, the tadpoles’ food intake has increased and their growth and development have accelerated. The tadpoles begin to look for new food, but their digestion function is still not strong. Feeding at this time The quality of the food directly affects the survival rate of the tadpoles. Therefore, the feed must be supplemented in feeding to meet the needs of its growth and development, mainly nutritious paste feed, such as egg yolk, corn flour, No. 4 flour, supplemented by delicate algae plants, etc. The bait can be put in during the day or at night, once a day, but it must be on time. The feeding amount is generally one egg yolk per 1,500 tadpoles per day. After careful raising, the tadpoles can reach 2cm in length when they are 20 days old. Their body color changes to light brown, with milky white markings on their backs and obvious black V-shaped markings on the border between their body and tail. Management of tadpoles aged 10 to 20 days requires keeping the pool water clean to prevent poisoning. The pool water should be changed once a day. The depth of the water should be 10 to 20cm. At the same time, the pool water should be protected from direct sunlight. Generally tadpoles live in water.
The middle stage of growth: (20-50 days) At this time, the digestive function of tadpoles continues to strengthen. In order to promote the development of the tadpole digestive tract as much as possible, it is in line with the "herbivorous" requirements of a specific tadpole stage of amphibians. Biological personality, 20-day-old tadpolesIn addition to feeding paste bait, plant feed and algae, such as duckweed, should be fed. In this era, the feeding and management of tadpoles was relatively simple. At first, it was mainly plant-based food, supplemented by animal-based food, and gradually transitioned to mainly animal-based food. The reduction of animal food will accelerate the abnormality of tadpoles, while the plant-based food will accelerate the abnormality of tadpoles. It can promote their individual growth, so they should usually be fed together. In terms of management, attention should be paid to ensuring that the pool water is clean and free from contamination, and bait residues in the pool should be removed every day. The appropriate stocking density is 300 to 500 tadpoles per square meter, so that the tadpoles can grow and develop normally. By the time they are 50 days old, some tadpoles will have grown back legs. At this stage, the survival rate of tadpoles can reach 95%. If the water temperature is low, this period will take longer.
Late growth period: (50 to 78 days) This is the critical period when tadpoles transform into young frogs. During this period, tadpoles grow hind limbs and forelimbs, and transform from aquatic to amphibious. Around 50 days old, the body is more than 4cm long, and the hind limbs grow. About 2 weeks after the hind limbs grow out (65 days old), the forelimbs begin to grow. After the forelimbs grow, the tail begins to be retracted, and the stone frog tadpole stops at this time. Foraging is added to the abnormal period. At this time, in addition to feeding enough feed, a small amount of animal live bait must be added to the feeding. In terms of management, we must: graded breeding, shallow and fresh water (only about 3cm water level in shallow water areas), mixed water and land, easy landing, bright color and quiet environment. It takes about 10 days for tadpoles to enter the abnormal period and end the abnormality. The abnormality rate of tadpoles entering the abnormal period can reach about 95%.
When raising tadpoles, you need to understand the growth cycles of the above-mentioned tadpoles and do the best breeding work according to their nature.
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