What are the symbiotic relationships of a cleaner wrasse?

Answer 1

Cleaner Wrasses provide a service to larger fish. In the ocean, particularly in a coral reef environment, cleaner wrasses, and other juvenile fish like the Gray and French Angelfish, provide the service of removing parasite from the larger fish's mouth, gills, skin/scales and fins. Without the cleaner fish the larger fish would suffer from parasitic infections. In return, the larger fish don't EAT the wrasses. A pretty good deal for both.