Hymenocera picta

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Facts
Latin name Hymenocera picta
Local name Harlequin shrimp
Family Alpheoidea - Hymenocera
Origin East Pacific, Central/West Pacific
Max length 5 cm (2")
As aquarium fish
Minimum volume 50 cm (13 gal)
Hardiness Average
Suitable for aquarium Experience, preparation and extra care required
Reef safe Reef safe with caution
Aggressiveness Peaceful
Feed
Recommended Other invertebrates
Beware of
Eats only starfish

This shrimp will only eat starfish, but this can be frozen.
Should be fed a couple of times a week with a small piece of starfish.

They are a good solution for controlling the Asterina starfish who in some cases will damage corals.

Descriptions and further reading
Family description (Alpheoidea)

Shrimps have many different purposes in the tank, some are just pretty while others are shy but useful. Some remove parasites whilst others help fight different pests. 

Read more about the different genera and species for more specific information.

References and further reading

About references

Hymenocera - Wikipedia - (English)
Public Enemy Number Two: Asterina sp. Starfish - Reefkeeping Magazine - (English)

Ronald L. Shimek. 2004. Marine Invertebrates (PocketExpert Guide) - TFH Publications / Microcosm Ltd. - (English)
Bob Fenner. Cleaner Shrimps of the Family Hippolytidae - Wet Web Media - (English)
James W. Fatherree. A Few Common Shrimps for the Marine Aquarium - Wet Web Media - (English)