What eat harlequin shrimp?

Harlequin shrimp are fascinating creatures, but they have a very specific diet: they eat starfish.

Specifically, they specialize in eating pest starfish like the crown-of-thorns starfish (Acanthaster planci). This makes them a valuable asset to coral reefs as the crown-of-thorns starfish can decimate coral populations.

Here are some things to keep in mind:

* They are picky eaters: They only eat certain species of starfish, primarily those that are considered pests.

* They are obligate carnivores: This means they can only survive on a diet of starfish.

* They hunt in pairs: Harlequin shrimp are social creatures that often pair up to hunt and share their prey.

While their diet is important for the health of the reef, it's also important to note that they can be aggressive towards their prey. If you are keeping harlequin shrimp in an aquarium, you should only keep them with starfish that are considered pests and ensure that the starfish are large enough for the shrimp to consume.