Care guide, husbandry, breeding, disease, sourcing, and tankmate intelligence on Porcelain Crab - written by the Fast Aquatics editorial team and cross-verified against vendor records on the live marketplace.
Porcelain Crab (Neopetrolisthes maculatus) is a marine invertebrate kept by aquarists for reef-tank cleanup, biological control of pests, or aesthetic display. Suitable for keepers with 6-12 months of experience and stable water chemistry.
Where Porcelain Crab comes from
Porcelain Crab (Neopetrolisthes maculatus) is native to Indo-Pacific reef ecosystems, with wild populations distributed across coral reefs, sandy lagoons, and rocky tide pools. Captive specimens are typically wild-collected; some species are starting to be aquacultured but most Porcelain Crab sold today still comes from wild reef collection. Sustainable sourcing matters - look for vendors who can verify their collection practices, and consider aquacultured alternatives when available.
Porcelain Crab tank size and setup
Porcelain Crab requires a minimum of 20 gallons for healthy adults. The minimum is based on the species' adult size (1 inch), territorial range, and behavior pattern. Most Porcelain Crab sold at small juvenile size will reach full adult size within 12-24 months and the system must be sized to the adult, not the juvenile.
For a Porcelain Crab setup: mature reef tank with stable parameters, live rock for cover, sandbed substrate (1-2"), reef-grade lighting if photosynthetic, and a fully-cycled biological filter at least 6 weeks old. Newly-cycled tanks under 6 weeks crash the parameters that Porcelain Crab depends on.
Porcelain Crab requires standard reef parameters held tightly stable: Temperature: 76-80°F (24-27°C) Specific gravity: 1.025 (refractometer-measured) pH: 8.1-8.4 Alkalinity: 8-9 dKH Calcium: 420-450 ppm Magnesium: 1300-1400 ppm Ammonia + nitrite: Both 0 ppm Nitrate: Under 10 ppm Copper: 0 (lethal to invertebrates)
Porcelain Crab is sensitive to copper - never medicate the display tank with copper if Porcelain Crab is present. Stable parameters beat perfect parameters.
What Porcelain Crab eats
Porcelain Crab is a plankton filter feeder. Filter-feeds on suspended plankton and dissolved organics. Target-feed live phytoplankton, rotifers, or commercial reef foods (Reef Roids, Coral Frenzy) 2-3x weekly to ensure adequate nutrition. Feed Porcelain Crab appropriately for its size + activity level. Overfeeding is the #1 cause of water-quality crashes in tanks of all sizes.
Porcelain Crab tankmates and compatibility
Porcelain Crab is generally peaceful and compatible with most reef community species. Avoid keeping with predatory fish that view inverts as food: large wrasses (especially halichoeres + thalassoma), triggerfish, pufferfish, and certain large angelfish. Multiple Porcelain Crab can share a tank but compete for food.
Browse care guides for tankmate-compatibility tables for Porcelain Crab and similar species.
Porcelain Crab adult size and lifespan
Porcelain Crab reaches 1 inch at adulthood with a captive lifespan of 2-4 years with proper care. Many marine inverts molt periodically; provide adequate calcium and a stable parameter regime to support healthy molts.
Can you breed Porcelain Crab?
Porcelain Crab breeding in captivity ranges from straightforward (some shrimp, snails) to nearly impossible (most starfish, urchins) due to pelagic larval requirements. Captive-bred specimens are increasingly available from sustainable aquaculture facilities; check with vendors before assuming wild-caught origin.
Common Porcelain Crab diseases and problems
Porcelain Crab is sensitive to copper, ammonia spikes, low oxygen, and rapid parameter swings. NEVER use copper medications in a tank with Porcelain Crab. Symptoms of stress: reclusive behavior, color loss, refusal to feed, abnormal molting (incomplete or stuck molts). Most Porcelain Crab deaths trace back to acclimation shock or parameter mismatch - drip-acclimate over 45-60 minutes when adding to a new tank.
Where to buy Porcelain Crab online
Porcelain Crab is sold at LFS (local fish stores), online retailers, and direct from breeders/wholesalers. Pricing varies widely by source, size, and quality:
Browse live Porcelain Crab from vetted Fast Aquatics vendors with carrier-tracked overnight shipping (FedEx Priority + UPS Next Day), climate-aware hold logic, and a 4-hour DOA window with photo-evidence claims. Captive-bred or aquacultured specimens cost more upfront but arrive healthier and integrate faster.
Porcelain Crab FAQ
How big does Porcelain Crab get?
1 inch at adulthood within 12-24 months.
How long does Porcelain Crab live?
2-4 years with proper care.
What is the minimum tank/pond size?
20 gallons, with larger systems strongly recommended.
Is Porcelain Crab hard to keep?
Porcelain Crab is rated intermediate difficulty.
What does Porcelain Crab eat?
Porcelain Crab is a plankton filter feeder; appropriate diet matches its natural feeding pattern.
Porcelain Crab taxonomy and care recommendations cross-checked against the following authoritative references and our internal vendor + breeder database.