Parent fish, called Onda, translated as "Atanga", which means scavenger and skin beauty expert in Chinese, is actually a kind of tropical fish, which should belong to the category of ornamental fish in principle. There are many kinds of small fish. His breeding elements are as follows: parent fish adapts to water temperature: 20℃-43℃, and 35℃-38℃ is ideal; PH value: 6.5-8, free of sulfur and fluorine; Capacity of hot spring fish pond: generally put 1000 fish/1m2; Can't feed according to the conventional method, and try to eat every tail fish in the hot spring pool or foot bath; The regulation of water quality and temperature is very important. To change water frequently, the key is to control the temperature difference when changing water.

The origin of "fish therapy" for relatives in hot springs can be traced back to the ancient tradition of soaking in hot springs in Turkey. Turks bathe in hot water to relieve fatigue and treat diseases. They have accumulated considerable experience in the process of soaking in hot springs for hundreds of years, and even found that the small fish in hot springs have a special "feeling" for the human body. In fact, this is caused by the lack of bait in pure spring water, so people simply use him and play with him. Miracle finally appeared, and many diseases were further recovered under the treatment of "pro-fish" in hot spring water. As a result, fish bath and fish therapy came into being.

It is said that parent fish, a strange fish, is good for human body. It can suck away the dead skin of human metabolism, suck out the garbage and bacteria left in the pores of human epidermis, and achieve the purpose of eliminating diseases. In recent years, this kind of fish was first introduced to Japan, which pays great attention to health, and then entered South Korea. Now it is popular in Japan and Korea. Parent fish in hot springs can swim freely in the spring water up to 43℃. The appearance of hot spring fish is deeply loved by consumers, which also injects new vitality into the hot spring industry and brings huge business opportunities.

The appearance of parent fish has brought new innovation to the bathing industry. Aquaculture brings people new enjoyment while bringing economic benefits.