For tropical tanks, the only one available occasionally in the hobby that I've heard of people having decent success with is Goniaster tesselatus (AydenLincoln here on R2R currently keeps one, but I know at least one person previously kept one for a few years - 5 years, IIRC - they do eat unhealthy corals on occasion though, and I believe that was why the person gave their star away).
I know some people have kept Goniaster tessellatus with long term success by feeding them algae and algae pellets (this starfish has about a thousand common names, but the one person I know currently keeping one refers to it as the West African Biscuit Starfish - this common name may also refer to a different species).
