I have a serpent star and about 12 blue legged hermits. they all get along very well together, exept during feeding time. you see, my starfish knows the time and exact location where food falls from the sky, as do the hermits. anyway, when the starfish spreads his legs and grabs the falling food and conveyer belts the pieces from its legs to its belly, a few hermits jump on the starfish and try to grab the food before it gets to the starfishs' belly. its quite a funny sight to see everyday, im sure my starfish doesn't find it so amusing, but he doesnt get to see it from my point of view. Never have i seen the hermits hurt the starfish during feedings or not and vise versa. They all seem to get along just fine. I dont know if this helps