Caribbean Red Leg Hermit Crabs (Paguristes cadenati)
Caribbean Red Leg Hermit Crabs (Paguristes cadenati) are highly valued members of a marine aquarium clean-up crew, known for their vibrant red legs and hardworking nature. These attractive hermits are excellent scavengers that help maintain a clean and healthy reef environment by consuming detritus, uneaten food and nuisance algae.
 
Behaviour & Benefits
Red Leg Hermits are generally considered one of the more reef-safe hermit crab species, often showing less aggression towards other tank inhabitants compared to some other hermit varieties. They are constantly active around the aquarium, helping to keep rockwork and substrate clean while contributing to the overall biological balance of the system.
 
Care & Compatibility
Paguristes cadenati thrive in stable marine aquariums and adapt well to both reef and fish-only systems. Providing a few spare empty shells in the aquarium can help prevent competition as they grow and change shells.
 
Key Benefits
• Excellent algae and detritus cleaners
• Active and interesting behaviour
• Reef-safe with proper care
• Attractive red coloration
 
Blue Leg Hermit Crabs (Clibanarius tricolor)
Blue Leg Hermit Crabs (Clibanarius tricolor) are one of the most popular and widely used members of marine aquarium clean-up crews. Recognisable by their striking blue legs with dark banding, these small but energetic crabs are excellent at controlling algae and scavenging leftover food within the aquarium.
 
Behaviour & Benefits
These hermits are particularly effective at grazing film algae, hair algae and detritus from rockwork and substrate. Their small size allows them to access tight spaces in the aquarium where larger clean-up crew members may not reach.
 
Care & Compatibility
Clibanarius tricolor are hardy and adapt well to a wide range of marine aquariums. Like most hermit crabs, they benefit from having spare shells available in the aquarium to accommodate growth and reduce territorial disputes.
 
Key Benefits
• Excellent algae grazers
• Small size allows access to tight spaces
• Hardy and adaptable species
• Ideal addition to most reef clean-up crews
 
Summary
Together, Caribbean Red Leg and Blue Leg Hermit Crabs make a highly effective and active clean-up crew, helping maintain a cleaner, healthier and more balanced marine aquarium.