Why do old tree frogs turn dark green when they move in the dark?

Master tree frog, also known as white tree frog, giant tree frog and green rain frog. Ranidae, Rana chensinensis. Fat and lovely, light green, white abdomen, strong vitality, a pair of big black eyes and a big mouth, the body color can range from dark gray to bright blue-green, and the adult is 5- 10cm. Among many pet tree frogs, the white tree frog is a strange guy. The adult worm is fat and round, with drooping flesh on both sides of his forehead and a wide and slightly upward mouth, just like an old man who giggles, hence the name "Old Frog". It is an ideal choice for first-time frog breeders.

They are fast climbing and jumping animals, and their food is unique, strong and easy to take care of, so they have always been the favorite of amphibians and the first choice of many novice tree frogs. Adult tree frogs are peculiar in appearance and fat, and their body color is light green like jade or light blue most of the time.

Most of the time, its body color is emerald light green, or light blue, but when it is active in a dark environment, it may turn dark green, and if the environment is unsuitable or emotional, it will turn brown.

Some tree frogs have milky white spots on their backs, and their bellies are all milky white. The iris of their eyes is golden, their pupils are horizontal, and there are large and developed suction cups at their toes that can be adsorbed on smooth surfaces.