Electric Blue Hermit Crab - Stenorhynchus Seticornis
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The Electric Blue Hermit Crab (Stenorhynchus seticornis) is a striking and active marine invertebrate, renowned for its vivid blue and black legs. This peaceful crab is an excellent addition to reef aquariums, helping control algae and detritus while adding visual interest.
Common Name: Electric Blue Hermit Crab
Scientific Name: Stenorhynchus seticornis
Family: Inachidae
Size: Up to 2 inches
Temperament: Peaceful
Difficulty: Easy
Reef Safe: Yes
Native Region: Found throughout the Caribbean and Western Atlantic, commonly inhabiting coral reefs and rocky substrates with plenty of crevices.
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 and sand with hiding places for grazing and protection.
• Algae & Detritus Control: Actively grazes on algae, detritus, and leftover food, helping maintain a clean tank.
• Behavior: Peaceful; may rearrange small items in the tank while exploring.
• Diet: Omnivorous—accepts algae, detritus, and small meaty foods.
• Tankmates: Compatible with most reef fish and invertebrates; avoid aggressive species that may threaten the crab.