These starfish are predominantly nocturnal. During the day they can be found in a dim area of the tank with their "basket tentacles" curled up around them.. At night, they unfurl these tentacles, forming a large flattened basket shaped "net" facing a water current, to filter food particles from their surroundings. Usually they feed on plankton or microorganisms. These items are caught in the arms by minute hooks positioned on their surface. In addition, the arms wrap about the particle. Due to their feeding method, Basket Stars have not been easy to keep in captivity. The Basket Star should be placed among some items that it can anchor itself to with its arms fully extended. Water current should flow toward the Basket Star, and you will use this current to help feed the sea Star. Once a Basket Star has positioned itself in an area where conditions are correct, it will probably not move about the tank. Many stay in one place for many months.The Basket Star has very thin, long tentacles that may appear almost similar to vines. These tentacles can reach lengths of 20 inchesStarfish are intolerant of sudden changes in oxygen levels, salinity and pH of the water, and cannot tolerate copper-based medications. The drip acclimation method is highly recommended for all Sea Stars due to their intolerability to changes in water chemistry. It should never be exposed to air while handling.