Species Profile
Emerald Crab
A green algae-grazing crab that consumes bubble algae and helps with rock cleaning.
The Emerald Crab (Mithraculus sculptus) is one of the few effective bubble-algae predators. Stays small, mostly peaceful, opportunistic if underfed.
- Min tank: 20 gallons
- Diet: Omnivore (favors algae)
- Reef safe: With caution
- Difficulty: Easy