The Harlequin shrimp, is a species of saltwater shrimp found at coral reefs in the tropical Indian and Pacific oceans. It is usually considered the only species in the genus Hymenocera but some split it into two species: H. picta from the central and east Pacific where the spots are deep pinkish-purple with a yellow edge, and H. elegans from the Indian Ocean and west Pacific where the spots are more brownish and have a blue edge (Wiki)
Porcelain crab feed by combing plankton and other organic particles from the water using long setae (feathery-hair or bristle-like structures) on the mouthparts
The Harlequin moves at a very slow pace and in waves. It also may have toxins from its prey (the starfish) which could make it distasteful and potentially dangerous for predators.
