Pederson Shrimp for Sale – A Tiny and Fascinating Cleaner Shrimp for Reef Aquariums

Few invertebrates in the reef hobby are as behaviorally captivating in proportion to their size as the Pederson Shrimp (Ancylomenes pedersoni). With its translucent body, vivid purple and white markings, and remarkable cleaning station behavior, this tiny Caribbean shrimp offers a window into one of the most extraordinary ecological relationships on the coral reef. At Dr. Reef Quarantined Fish, every Pederson Shrimp is carefully observed and confirmed healthy before it ships to you.

A Cleaner With an Important Role

The Pederson Shrimp is native to the Caribbean Sea and tropical western Atlantic, where it inhabits shallow reef environments in close association with certain anemone species, particularly corkscrew anemones of the genus Bartholomea. Like other cleaner shrimp, it establishes a cleaning station where it signals its services to passing fish by waving its long white antennae. Fish that recognize the signal approach the cleaning station and adopt a passive posture while the shrimp moves over their body, removing parasites, dead tissue, and debris. This cleaning behavior is not merely incidental but represents a genuine ecological service that contributes to the health of fish on the reef, and observing it play out in the home aquarium is one of the most remarkable behavioral displays the reef hobby has to offer.

Appearance and Size

The Pederson Shrimp is a small and delicately beautiful invertebrate. The body is largely translucent with vivid violet to purple spots and markings that are particularly concentrated on the abdomen, and the long white antennae that are characteristic of cleaner shrimp are prominent and constantly in motion. Adults typically reach only around half an inch to one inch in length, making this one of the smallest shrimp species available in the hobby and a creature that rewards close observation in a system where it can be seen clearly and appreciated in detail.

Aquarium Requirements

The Pederson Shrimp is best suited to nano and smaller reef aquariums where its small size does not make it invisible against the scale of the system. A tank of 10 to 30 gallons allows this species to be observed closely and appreciated fully. Housing it alongside a compatible host anemone, particularly a corkscrew anemone, encourages the most natural behavior and provides the shrimp with the security and association it relies on in the wild. Water quality must be consistently maintained with stable parameters, as small shrimp are sensitive to ammonia spikes, copper contamination, and rapid salinity changes. Iodine supplementation as part of a balanced trace element program supports healthy molting over the long term.

Feeding

The Pederson Shrimp obtains much of its nutrition through its cleaning activities, consuming the parasites and organic debris it removes from client fish. In a well-established reef aquarium with a healthy fish population it will find considerable natural nutrition through this behavior. Supplemental feeding with very fine meaty foods, baby mysis shrimp, and liquid reef foods broadcast into the water column ensures it receives adequate nutrition, particularly in smaller systems with fewer fish visiting the cleaning station.

Temperament and Tank Compatibility

The Pederson Shrimp is entirely peaceful and poses no threat to fish, corals, or other invertebrates. It is reef safe in every respect and is compatible with virtually all community reef inhabitants. Its small size means it should not be housed with predatory fish, aggressive wrasses, or other species that may view it as a food item. It coexists well with other peaceful invertebrates and small reef fish, and in appropriate company it will establish its cleaning station behavior quickly and maintain it reliably as a regular feature of the aquarium’s activity.

Why Buy from Dr. Reef

Small and specialist invertebrates like the Pederson Shrimp are often the most overlooked when it comes to pre-sale preparation, yet their sensitivity to shipping stress and parameter instability makes careful handling at every stage of the supply chain critically important. At Dr. Reef Quarantined Fish, every Pederson Shrimp is carefully observed and confirmed healthy before being offered for sale. Purchasing a shrimp that has been properly acclimated and held under stable, controlled conditions gives this tiny and remarkable animal the best possible start in your reef system.