Starfish is a tropical fish, mainly distributed in the Middle East. Generally, it lives in18 ~ 43℃ hot spring water, heated water, brackish fresh water and high temperature water. Its survival temperature is15 ~ 43℃, the optimum water temperature is 28 ~ 38℃, and the highest critical temperature is 41~ 43℃. Stop eating and move less below 16℃, and die undercover below 14℃. The optimum PH value is 7.0 ~ 8.5.
Star fish is often used for "hot spring fish therapy". Its physical therapy principle and effect are as follows: when people enter the hot spring pool, fish gather around the human body and peck at the aging cortex, bacteria and pore excreta.