Emeral Crab

The Emerald Crab (Mithrax sculptus) is a saltwater invertebrate that is often used as part of a clean up crew in marine fish tanks. They are popular because they help keep the tank clean and have been reported to eat bubble algae (Velonia sp.). Bubble algae can grow under even optimal water conditions and this crab is supposed to help keep the bubble algae population to a minimum. They are a pretty emerald color and stay on the small side, only reaching about 2 inches (5 cm) when fully grown.


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Price: $5.99