Harlequin Shrimp - Hymenocera picta
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The Harlequin Shrimp (Hymenocera picta) is a stunning and highly specialized marine invertebrate, known for its striking color pattern and unique diet of starfish. This peaceful shrimp is a captivating addition to reef aquariums, providing visual interest and fascinating natural behavior.
Common Name: Harlequin Shrimp
Scientific Name: Hymenocera picta
Family: Palaemonidae
Size: Up to 2 inches (5 cm)
Temperament: Peaceful
Difficulty: Moderate to Difficult
Reef Safe: Yes
Native Region: Found throughout the Indo-Pacific, commonly inhabiting coral reefs and rocky substrates where starfish populations are present.
Tank Size: Minimum of 20 gallons
Temperature: 74–80°F (23–27°C)
pH: 8.0–8.4
Salinity: 1.023–1.025
Substrate: Live rock with crevices for hiding; stable tank setup recommended.
• Diet: Specialized feeder—feeds exclusively on starfish; ensure a steady supply of prey.
• Behavior: Peaceful but may be territorial toward conspecifics; often seen in pairs.
• Tankmates: Compatible with most peaceful reef fish and invertebrates; avoid predatory species that may threaten the shrimp.
• Care: Requires mature tanks with stable water conditions and minimal competition for food.