🔍 Description:
The Emerald Crab is a widely used reef tank cleaner known for its metallic green carapace, compact size, and appetite for bubble algae (Valonia sp.). With their strong, cupped claws, they’re able to scrape rock surfaces and pull algae from crevices that many other clean-up crew members can’t reach.

While generally peaceful, Emerald Crabs can become opportunistic in cramped or underfed tanks — possibly picking at coral polyps or small inverts. Still, in well-fed and well-sized aquariums, they’re an excellent algae-fighting addition.