Hi, i have a 67l Nano tank with only a couple of fish, clean up crew and corals. I brought a starfish some time ago and have forgotten the name of it, I haven’t seen it since but now and then see the odd tentical coming out of the rocks. It wasn’t the normal star it one that has a small round body and long legs/tenticals. I was looking at my tank today and noticed a tentical coming from the rocks, it looks a lot bigger then when I got it and was wondering if some could identify the star I am describing and tell me if it is ok in my tank. All help would be greatful. I don’t know what I would do without this website as it’s helped me out so much.