Found under the "inverts" tab on this site:
The Red General is a large starfish that is deep bodied. It is colored in gray and red, including a red five-pointed star in the center of its body, which lends to its name of Red General. These stars have red tubercles that run along each arm, as well as surrounding the star in the center. They are very active stars that should only be kept in larger aquariums. They are not reef safe, because they will eat sessile invertebrates. They will not harm other starfish or fish. They make great additions to fish-only tanks, since they add lots of color. These Starfish should be fed regularly.
As far as I can see is you just spot feed them every now and then. You could alternate between a homemade "seafood salad" and some silversides or something similar. They will eat corals though for sure so you can't go with a reef.