A living jewel for your cleanup crew. The Gold Ring Cowrie wears a glossy, porcelain-smooth shell crowned with a vivid golden-orange ring — the single brushstroke of color that gives the species its name. As it glides across the rockwork, its fleshy mantle sweeps up and over the shell, keeping that finish polished to a mirror sheen.

Beyond the looks, this is a hard-working grazer. Gold Ring Cowries patrol live rock and glass, mowing down film algae, diatoms, and nuisance microalgae in the tight crevices other snails can't reach. Their compact size — typically staying around an inch — makes them one of the more reef-friendly cowries, far less likely to bulldoze frags than their larger tiger-cowrie cousins.

Hardy, peaceful, and endlessly watchable, they're a favorite for nano tanks and full-size reefs alike.

Quick facts

• Scientific name: Monetaria annulus
• Max size: ~1 inch
• Diet: film algae, diatoms, and microalgae grazer
• Temperament: peaceful
• Reef compatibility: generally reef-safe
• Care level: easy
• Parameters: 76–80°F, salinity 1.024–1.026, stable pH

Drip acclimate over 1–2 hours before introducing to your display. Like all marine invertebrates, sensitive to copper and sudden swings in salinity.