By Bob Goemans
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Real Reef Rock 

Family Palaemonidae

Stegopontonia commensallis

Calman, 1939

Sea Urchin Partner Shrimp

Likely Reef Tank Suitable

Not Suitable for Fish-Only Tank

Range: Indo-West Pacific Ocean

Size: 1.5 inches (3 cm)

Natural Environment: Inhabits shallow reef areas and lives in association with urchins.

Aquarium Suitability: Not collected for the home aquarium trade.


    Kingdom: Animalia

    Phylum: Arthropoda

    Class: Malacostraca

    Order: Decapoda

    Family: Palaemonidae

    Genus: Stegopontonia

FYI: Shown here for identification only.

Depends upon the cleaning process for its food.

Lives mainly with Diadems, Echinothrix and Astropyga genera urchins.

 Stegopontonia commensallis (Sea Urchin Partner Shrimp)
Photo © Andrea & Antonella Ferrari
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Aquarium Systems (Instant Ocean)