Starfish food chain?
Most species of starfish eat mussels and other mollusks, or shellfish. Small starfish need to be on the lookout for larger starfish, which will sometimes attack, kill and eat them. Manta rays, some sharks and other large, bony fishes eat starfish.
Not really, mainly starfish prey prefer shelled animals such as oysters and clams. They would not eat starfish because to feed they tend to push open shells using their tube feet and extend their stomach out to engulf and digest food. Starfish have a rough surface and starfish prefer soft tissue as a food.