Family

Common name: Emerald Crabs

Scientific name: Carpiliidae

Carpiliidae, commonly known as Emerald Crabs, are a family of reef-safe crustaceans known for their vibrant green coloration and their beneficial role in controlling algae in marine aquariums. They are peaceful scavengers that can coexist with most tank inhabitants. Their diet consists mainly of various types of algae, but they will also consume leftover food and detritus, helping to keep the tank clean. They are nocturnal and often hide during the day, coming out at night to feed. Hobbyists appreciate them for their algae-eating habits and their ability to reach into small crevices with their nimble claws.

  1. Carpilius convexus EG-14
    Common name: Variable Coral Crab
    Scientific name: Carpilius convexus
  2. Seven-Eleven Crab in Hawaii
    Common name: Seven-eleven Crab
    Scientific name: Carpilius maculatus