Sally Lightfoot Crab - Percnon gibbesi
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The Sally Lightfoot Crab (Percnon gibbesi) is a vibrant and agile reef crab prized for its active scavenging behavior and bright coloration. Known for its bright red, orange, and blue hues, this crab is a visually striking addition to reef aquariums and is an effective cleaner of algae and detritus.
Common Name: Sally Lightfoot Crab
Scientific Name: Percnon gibbesi
Family: Plagusiidae
Size: Up to 2 inches (5 cm)
Temperament: Semi-aggressive
Difficulty: Easy
Reef Safe: With caution
Native Region: Found throughout the tropical Indo-Pacific and Caribbean, typically on rocky reef flats and coral rubble zones.
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 and open surfaces for foraging; stable rocks for climbing.
• Algae Control: Actively grazes on film algae and detritus, contributing to tank cleanliness.
• Behavior: Fast-moving and alert; may chase or harass smaller or slow-moving invertebrates.
• Tankmates: Best with larger peaceful or semi-aggressive reef fish; avoid housing with delicate corals or small, slow invertebrates.
• Feeding: Omnivorous—offer chopped seafood, algae, and small pellets to supplement natural grazing.