The life span of blue star fish is generally about 4-5 years. As long as you pay attention to the health of the living environment and diet when raising, it will help to prolong the life span of blue star fish. The most suitable water temperature for blue star fish is 22-26 ℃, and there are no special requirements for water quality. The blue star fish has folded gills that can utilize the oxygen in the air, so it does not worry about the lack of oxygen in the water. Since the blue star fish likes to be quiet and does not like to move, it is recommended to plant some aquatic plants in the aquarium.

The whole body of blue star fish is blue-gray, and the abdomen is light yellow, so when raising blue star fish, not only should pay attention to the layout of the rearing environment, but also pay attention to whether the food fed to blue star fish is scientific. Blue star fish is an omnivorous fish and can accept a variety of live bait such as larvae, nematodes, water earthworms, water fleas, etc., and also eat artificial bait. It even eats live small fry, and even shrimp and crab seeds, but it will not chase small fish that cannot be swallowed, but blue star fish still prefer the feed that floats on the water.