Emerald Crabs

The Emerald Crab is a hardworking and unique addition to your saltwater aquarium cleanup crew! With its bright green coloration and distinctive claws, this reef-safe crab is as eye-catching as it is effective. Known for its appetite for nuisance algae, including bubble algae, the Emerald Crab plays a vital role in maintaining a balanced and clean tank ecosystem.

Key Features:

• Size: Typically 1.5-2 inches across
• Temperament: Generally peaceful, though opportunistic behavior is possible in cramped or poorly fed tanks
• Diet: Omnivorous, consuming algae, detritus, and leftover food
• Reef-Safe: Yes, but may occasionally nibble on soft corals or invertebrates if underfed

Care Requirements:

• Tank Size: Suitable for tanks 20 gallons and up
• Water Parameters: Salinity (1.023-1.026), pH (8.1-8.4), temperatures (72-78°F)
• Compatibility: Best kept with peaceful tank mates; avoid housing with aggressive fish or predatory invertebrates

Why Choose the Emerald Crab?

• Algae Control: Renowned for eating bubble algae, as well as hair algae and other unwanted growths, the Emerald Crab is a natural algae manager.
• Fun to Watch: This crab is active and fascinating, often seen climbing rockwork and scavenging for food.
• Low Maintenance: Hardy and easy to care for, making it suitable for beginners and experienced aquarists alike.

Additional Notes:

Ensure the Emerald Crab has plenty of live rock and hiding spaces to feel secure. Supplement their diet with algae wafers or other foods if natural algae is scarce in the tank. While generally reef-safe, they should be monitored to ensure they don’t nip at corals or other invertebrates in low-food conditions.