Description
Mespilia globulus, commonly known as the Tuxedo Urchin, is a small and highly effective algae-grazing echinoderm valued for both its utility and distinctive appearance. This species is easily recognized by its rounded body covered in short, alternating bands of deep blue, black, and white spines, giving it the appearance of a miniature “tuxedo.” Slow-moving and methodical, the Tuxedo Urchin spends its time grazing across rockwork and hard surfaces, making it an excellent natural solution for controlling nuisance algae in reef aquariums.
Origin: Indo-Pacific
Depth: 1–20 m (3–65 ft)
Lighting: Not demanding; tolerant of all standard reef lighting conditions
Flow: Low to moderate; prefers calm to gently moving water
Tank Placement: Rockwork and hard surfaces; may occasionally traverse the substrate
Temperature: 74–80°F (23–27°C)
Salinity: 1.023–1.026 SG
pH: 8.1–8.4
Diet: Herbivorous – feeds on film algae, coralline algae, and some macroalgae; supplemental feeding with dried seaweed may be required in very clean systems
Temperament: Peaceful
Size: Up to 7.5 cm (3 inches)
Care Level: Easy – hardy and well suited for most reef aquariums
Compatibility: Reef-safe; safe with corals and fish, but may dislodge unsecured frags or decorations while grazing
