Overview
The Blue Tuxedo Urchin (Mespilia globulus) is a intermediate saltwater species known for its blue, black bands coloration. Blue and black bands. Surfaces.
Origin & Appearance
Origin: Indo-Pacific.
Colors: Blue, Black bands.
Body Shape: Urchin (spherical/spiny). Typical adult dimensions: 6.0 x 6.0 x 4.2.
Sexual Dimorphism: Minimal.
Tank & Water Requirements
| Min Tank Size | 20 gallons |
| Temperature | 75–81°F |
| pH Range | 8.1–8.4 |
| Water Hardness (GH) | dKH 8-12 |
| Bioload | low |
| Oxygen Demand | medium |
| Plant Safe | yes |
| Aquarium Position | Surfaces |
Behavior & Activity
Slow surface grazer; same tube-foot locomotion; carries bits of rubble and algae as decoration; steady methodical
Speed: 15/100Aggression: 1/10diurnal
Breeding
Not bred at home; broadcast spawner
Common Diseases
💊 Sensitive to salinity💊 copper
Expert Notes
Blue and black bands; reef safe