Blue Porcelain Crabs are peaceful, filter-feeding marine invertebrates known for their vivid blue coloration and fan-like feeding appendages. They thrive in mature saltwater aquariums with stable water parameters, moderate flow, and plenty of live rock for shelter. Ideal water conditions include temperatures of 72–78°F (22–26°C), salinity of 1.023–1.025, and a pH of 8.1–8.4. They use their feathery arms to collect plankton and suspended particles, so a well-fed reef tank with regular phytoplankton dosing supports their needs. These crabs are generally reef-safe and peaceful, but may become territorial with others of the same species in tight spaces. Stable conditions and minimal aggression from tankmates are key to their long-term health.
Blue Porcelain Crab Quick Care Table
Requirement
Details
Tank Size
Minimum 10 gallons (larger preferred)
Temperature
72–78°F (22–26°C)
Salinity
1.023–1.025
pH Range
8.1–8.4
Diet
Filter feeder; supplements like phytoplankton
Behavior
Peaceful, reef-safe, may be territorial
Tank Setup
Live rock, moderate water flow
Water Quality
Stable, mature reef conditions; low nitrates
Compatibility
Avoid aggressive fish/inverts; one per territory