
Shrimp, Snails, and Crabs
Arrow Spider Crab
Stenorhynchus seticornis
Photo: Diego Delso · CC BY-SA 4.0 · Wikimedia Commons
Key facts
- Temperature23–27 °C
- pH8.1–8.4
- Adult size6 cm
- Difficulty★☆☆☆☆
- TemperamentSemi-aggressive
- WaterMarine
- Reef safeWith caution
Full profile
- Family
- Inachoididae
- Origin
- Tropical Western Atlantic
- Size
- 6 cm (legs 15 cm)
- Temperature
- 23 – 27°C
- pH
- 8.1 – 8.4
- Salinity
- 1.023 – 1.025
- Difficulty
- ★☆☆☆☆
- Water type
- marine
- Behavior
- semi-aggressive (may eat worms and small fish)
- Diet
- omnivore (eats bristleworms)
- Reproduction
- planktonic larvae
- Reef Safe
- ⚠️ Use with caution
Notes: Triangular body with very long legs. Effective against fireworms, but may attack small, sleeping fish.





