BigFish,
Could you give more detail on the starfish consumption. I keep two stars and a serpent with Octane and would not want to lose them if this behavior is common to the Caribbean Two Spot (O. hummelincki - filosus) but don't want to remove them if some other explanation is viable. What kind of star did you have, are you sure it was alive when eaten, did you see Henry take it into his webbing or did it just disappear/die? As Nancy pointed out, no one else has reported stars being consumed so I am hoping there might be another answer.