Care guide, husbandry, breeding, disease, sourcing, and tankmate intelligence on Blue Tuxedo Urchin - written by the Fast Aquatics editorial team and cross-verified against vendor records on the live marketplace.
Blue Tuxedo Urchin (Mespilia globulus) 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 Blue Tuxedo Urchin comes from
Blue Tuxedo Urchin (Mespilia globulus) 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 Blue Tuxedo Urchin 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.
Blue Tuxedo Urchin tank size and setup
Blue Tuxedo Urchin requires a minimum of 30 gallons for healthy adults. The minimum is based on the species' adult size (2-3 inches), territorial range, and behavior pattern. Most Blue Tuxedo Urchin 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 Blue Tuxedo Urchin 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 Blue Tuxedo Urchin depends on.
Blue Tuxedo Urchin 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)
Blue Tuxedo Urchin is sensitive to copper - never medicate the display tank with copper if Blue Tuxedo Urchin is present. Stable parameters beat perfect parameters.
What Blue Tuxedo Urchin eats
Blue Tuxedo Urchin is a algae grazer. Provides natural algae control by grazing on filamentous, hair, and turf algae throughout the tank. Supplemental nori sheets and algae wafers ensure adequate nutrition when tank algae is depleted. Avoid copper-based algaecides - they kill Blue Tuxedo Urchin. Feed Blue Tuxedo Urchin appropriately for its size + activity level. Overfeeding is the #1 cause of water-quality crashes in tanks of all sizes.
Blue Tuxedo Urchin tankmates and compatibility
Blue Tuxedo Urchin 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 Blue Tuxedo Urchin can share a tank but compete for food.
Browse care guides for tankmate-compatibility tables for Blue Tuxedo Urchin and similar species.
Blue Tuxedo Urchin adult size and lifespan
Blue Tuxedo Urchin reaches 2-3 inches at adulthood with a captive lifespan of 3-6 years with proper care. Many marine inverts molt periodically; provide adequate calcium and a stable parameter regime to support healthy molts.
Can you breed Blue Tuxedo Urchin?
Blue Tuxedo Urchin 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 Blue Tuxedo Urchin diseases and problems
Blue Tuxedo Urchin is sensitive to copper, ammonia spikes, low oxygen, and rapid parameter swings. NEVER use copper medications in a tank with Blue Tuxedo Urchin. Symptoms of stress: reclusive behavior, color loss, refusal to feed, abnormal molting (incomplete or stuck molts). Most Blue Tuxedo Urchin deaths trace back to acclimation shock or parameter mismatch - drip-acclimate over 45-60 minutes when adding to a new tank.
Where to buy Blue Tuxedo Urchin online
Blue Tuxedo Urchin is sold at LFS (local fish stores), online retailers, and direct from breeders/wholesalers. Pricing varies widely by source, size, and quality:
Browse live Blue Tuxedo Urchin 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.
Blue Tuxedo Urchin FAQ
How big does Blue Tuxedo Urchin get?
2-3 inches at adulthood within 12-24 months.
How long does Blue Tuxedo Urchin live?
3-6 years with proper care.
What is the minimum tank/pond size?
30 gallons, with larger systems strongly recommended.
Is Blue Tuxedo Urchin hard to keep?
Blue Tuxedo Urchin is rated intermediate difficulty.
What does Blue Tuxedo Urchin eat?
Blue Tuxedo Urchin is a algae grazer; appropriate diet matches its natural feeding pattern.
Blue Tuxedo Urchin taxonomy and care recommendations cross-checked against the following authoritative references and our internal vendor + breeder database.