Spineless Sea Urchin Red and Blue Mespilia Globulus

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Spineless Red & Blue Sea Urchin – Mespilia globulus

Overview:
The Spineless Sea Urchin (also called the Blue Tuxedo Urchin) is a small, reef-friendly echinoderm prized for its brilliant blue and red bands and short, blunt spines. Unlike many urchins, its spines are rounded and non-piercing, making it a much safer choice for community reef tanks.

Origin:
Native to Indo-Pacific reefs, especially around Fiji, Tonga, and Indonesia, where it inhabits coral rubble zones and lagoons.

Feeding:

• Primarily an algae grazer, consuming coralline and film algae.

• Will also scavenge detritus and leftover food.

• Can be supplemented with nori, spirulina, and algae wafers.

Tank Mates:

• Completely reef-safe and compatible with corals, clams, and most peaceful fish.

• Avoid housing with predators that eat echinoderms (e.g., triggers, puffers, large Wrasses).

Aggression Level:
Peaceful. Non-aggressive and harmless to other tank mates.

Experience Level:
Beginner-Friendly. Hardy and easy to keep, provided the tank has enough algae growth or supplemental feeding.

Water Parameters:

• Temperature: 74–80°F (23–27°C)

• pH: 8.1–8.4

• Salinity: 1.023–1.025

• Tank Size: 30+ gallons

Unique Features:

• Brilliant blue and red banding with short, non-stinging spines.

• Will often carry shells, coral rubble, or algae on its back as camouflage.

• Excellent at natural algae control in reef tanks.

✨ The Spineless Red & Blue Sea Urchin is a safe, colorful, and efficient algae grazer, perfect for reef aquariums of all sizes.

Above images for illustration purposes only. Exact colours, patterns, and size may vary between individuals.

Please note: The livestock that is sold on our online site is not held in store at our Swell shop, or available for collection from the shop. Species sold at our Swell store will differ from ones available to order to your door.

All livestock deliveries are subject to our full Delivery Terms & Conditions, please read before ordering.