Blue Tuxedo Urchin Care
The Blue Tuxedo Urchin, scientifically named Mespilia globulus, and sometimes commonly known as Sphere Urchin or Globe Urchin originates in the Indo-Pacific region. They have between five and ten broad stripes of color, ranging between blue and black, with red, brown, and other dark colored spines on their bodies. They grow up to be three inches big, are a peaceful creature, and are reef safe. The Blue Tuxedo Urchin will spend most of its time hiding during the day between the rocks, crevices, and under plants in a sandy substrate and will come out at night, like so many other creatures, to search for food.
They are a herbivore and graze on algae. They generally roam alone but if a large enough tank is provided, with an adequate amount of food, they can be housed in groups. If algae levels are low the diet should be supplemented with dried seaweed. These creatures are quite beautiful and make a great addition to an aquarium twenty gallons (20 U.S. gallons) or larger. They thrive best in temperatures of 72-78°F, a dKH of 8-12, pH of 8.1-8.4, and a specific gravity of 1.023-1.025. They are very sensitive to copper based medications and high nitrates. If they appear to be losing a lot of spines then water conditions are bad. They are considered easy to care for.