Yellowline Arrow Crab (bristle worm eater)

Macroalgae Farms

Yellowline Arrow Crab (bristle worm eater)

$29.99

Key Features:
⭐ Unique long-legged crab with striking appearance
• Helps control bristle worms and organic debris
• Constantly active across rockwork and crevices
• Adds a unique, eye-catching centerpiece to your cleanup crew

In 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.

Yellowline Arrow Crab (bristle worm eater)

$29.99

$29.99

About this item

Yellowline Arrow Crab 

Arrow Crabs (Stenorhynchus seticornis) are distinctive reef invertebrates known for their long, spider-like legs and unique triangular body shape. Their unusual appearance and constant movement make them a fascinating addition to marine aquariums, especially for hobbyists looking to add something visually different to their system.

In addition to their appearance, Arrow Crabs are active scavengers and opportunistic predators that help consume leftover food, detritus, and certain nuisance organisms. They are particularly known for targeting bristle worms, making them a functional addition to aquariums where these pests are present.

Available Options

Single Arrow Crab

  • Unique ornamental invertebrate with functional benefits
  • Helps control bristle worms and organic debris
  • Best suited for established marine aquariums

Care Information

💡 Lighting
All Lighting Conditions		 🌊 Water Flow
Low to Moderate
📍 Placement
Rockwork and crevices		 ⚙️ Care Level
Moderate
📈 Behavior
Active scavenger and opportunistic predator		 🧪 Feeding
Meaty foods, detritus, bristle worms

Special Considerations

Arrow Crabs are not fully reef-safe and may become more aggressive or predatory as they mature. They can prey on small fish, shrimp, or other invertebrates, particularly in smaller aquariums or when underfed. Best kept in larger systems with appropriate tank mates and adequate feeding.

🔍 Aquarium Insights

Arrow Crabs are highly active and unique additions that provide both function and visual interest:

  • Known for their long legs and distinctive triangular body shape
  • Constantly move through rockwork and crevices
  • Help reduce bristle worm populations in some systems
  • May become territorial or predatory as they grow

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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