The Red Sea Cleaner Wrasse, also known as the Four Line Wrasse, is a brilliant blue with four, horizontal, lighter blue stripes with purple trimming the tail.
One specimen should be kept per tank in a 50 gallon or larger community aquarium. It should have some live rock available for use as shelter and for food.
As a juvenile, it will eat parasites from placid tank mates. Adults feed almost entirely on polyps of stony corals. This is one of the reasons this is such a hard species to keep in an aquarium.
It is a very fragile fish and should only be cared for by a very experienced aquarist.