Halloween Urchin (Algae Eater)

Macroalgae Farms

Halloween Urchin (Algae Eater)

$29.99

Key Features:
⭐ Powerful algae grazer for cleaner rockwork and surfaces
• Unique Halloween coloration with high visual appeal
• Constant movement adds life and activity to the aquarium
• Helps control film algae, hair algae, and organic buildup

Out of stock

This product will be available for sale in 2 weeks, but you can pre-order now to receive 10% discount!

Estimated delivery between June 16 and June 18.

Halloween Urchin (Algae Eater)

$29.99

$29.99

About this item

Halloween Urchin

Halloween Urchins (Tripneustes gratilla) are bold, highly effective herbivores known for their ability to rapidly graze nuisance algae across rockwork, substrate, and hard surfaces. Their constant movement and strong grazing behavior make them one of the most impactful additions for controlling algae in established reef aquariums.

These urchins are also recognized for their unique behavior of decorating themselves with shells, algae, and debris, creating a dynamic and ever-changing appearance. This natural instinct adds personality while helping them naturally blend into reef environments.

Available Option

1 Halloween Urchin

  • High-impact algae grazer for reef aquariums
  • Provides continuous surface cleaning across rock and substrate
  • Adds unique movement and visual interest to the tank

Care Information

💡 Lighting
All Lighting Conditions		 🌊 Water Flow
Moderate
📍 Placement
Rockwork and substrate		 ⚙️ Care Level
Easy to Moderate
📈 Behavior
Active grazer, roaming		 🧪 Feeding
Hair algae, film algae, macroalgae

Special Considerations

Halloween Urchins may pick up and move loose frags, shells, or decorations as part of their natural behavior. They require stable calcium and alkalinity levels for proper growth and spine health. In low-algae systems, supplemental feeding with dried algae may be necessary.

🔍 Aquarium Insights

Halloween Urchins are among the most effective cleanup crew members for algae control:

  • Actively consume hair algae, film algae, and some macroalgae species
  • Provide continuous grazing across large areas of the aquarium
  • Reach surfaces and crevices often missed by snails and hermits
  • Deliver strong, noticeable algae reduction in established reef systems

Learn More

For detailed species information, compatibility, and care tips, visit our Species Library.

Livestock Disclaimer

Due to natural variation between specimens, coloration and size may vary slightly from images shown. Photographs are representative examples of general appearance and size.

Individual specimens may vary based on age, environment, and natural development.

Approximate size ranges are provided for reference but may differ slightly from the specimen received.

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