What season was tadpoles born?
Tadpoles are the primary stage of amphibian individual development. Early tadpoles were round or oval, looked like fish and had lateral organs. Because there are no pores in the mouth, you can't eat; After that, eyes and nostrils appeared one after another; There is a sucker under the head, which can be used to adsorb on aquatic plants. There are external gills on both sides of the head, which have respiratory function. Under the condition of artificial feeding, tadpoles usually hatch for 8 ~15 days after female frogs lay eggs. The newly hatched tadpoles are brownish yellow, with a body length of 6 ~ 8 mm, horseshoe-shaped suckers on their heads for attachment, and their mouths are located below the suckers, so they are weak and have little activity. They get nutrition through the yolk sac and don't eat with their mouths open. After 3 days, they can be fed exogenous nutrients to meet their nutritional needs and growth needs.