Common name: Emperor Shrimp

General information

The Emperor Shrimp, Periclimenes rex, is a strikingly colored marine invertebrate known for its vibrant hues and symbiotic relationships. This species is a member of the family Palaemonidae and is highly sought after by marine aquarium enthusiasts for its beauty and interesting behavior.

Emperor Shrimps are small, typically reaching only about 2.5 centimeters in length. They exhibit a complex pattern of white, red, and blue across their bodies, making them a visually appealing addition to any reef tank.

Care

Periclimenes rex requires a well-established aquarium with plenty of live rock and hiding places. They are sensitive to water quality, so maintaining pristine conditions is crucial. A varied diet of meaty foods such as finely chopped seafood, frozen mysis shrimp, and plankton is essential for their health.

Reproduction

Emperor Shrimps are known to reproduce in the aquarium if conditions are favorable. They have a larval stage that requires specialized care, and raising the larvae to adulthood can be challenging for the hobbyist.

Symbiosis

One of the most fascinating aspects of the Emperor Shrimp is its symbiotic relationship with various sea cucumbers and nudibranchs. They are often found riding on these hosts, feeding on the detritus and parasites that accumulate on their bodies, while also gaining protection from predators.

Habitat

Periclimenes rex is found in the Indo-Pacific region, from the Red Sea to the Western Pacific. They inhabit coral reefs and are often associated with their host sea cucumbers and nudibranchs.