Scarlet Hermit Crab

Scarlet Hermit Crab (Paguristes cadenati): Brilliant red legs and claws with white tips make this one of the most striking reef hermits Compact body with tan to orange antennae and yellow eye stalks Typically reaches 1–1.5 inches in body size Active scavenger and algae grazer, ideal for reef cleanup crews Origin & Habitat Found throughout the Caribbean and Western Atlantic, including Florida, Bahamas, and Belize Inhabits sandy and rocky reef zones, often in shallow water Occupies discarded snail shells for protection Temperament & Reef Safety Peaceful and reef‑safe Excellent algae and detritus grazer May compete with other hermits or snails for shells if extras aren’t provided Safe with corals and most invertebrates Tank Requirements Suitable for nano to large reef tanks Provide a variety of empty shells to prevent aggression Stable water parameters: 72–78°F, pH 8.1–8.4, salinity 1.023–1.025 Prefers moderate flow and plenty of rockwork for grazing Diet Omnivore Eats film algae, detritus, leftover food, and biofilm Benefits from occasional supplemental feeding with marine pellets or nori Compatibility Works well with peaceful reef inhabitants Avoid housing with predatory fish or large crabs Can be kept singly or in small groups Why Hobbyists Love It Vivid coloration and constant activity Excellent natural algae control Hardy and easy to care for Adds personality and movement to reef displays