Overview
The Pistol/Snapping Shrimp (Alpheus randalli) is a beginner saltwater species known for its red-brown, white bands coloration. Pairs with watchman gobies. Bottom.
Origin & Appearance
Origin: Indo-Pacific.
Colors: Red-Brown, White bands.
Body Shape: Shrimp (curved crustacean). Typical adult dimensions: 5.0 x 0.8 x 1.2.
Sexual Dimorphism: Moderate; females larger with curved underbelly (saddle visible).
Tank & Water Requirements
| Min Tank Size | 11 gallons |
| Temperature | 75–81°F |
| pH Range | 8.1–8.4 |
| Water Hardness (GH) | dKH 8-12 |
| Bioload | very-high |
| Oxygen Demand | low |
| Plant Safe | yes |
| Aquarium Position | Bottom |
Behavior & Activity
Burrow-dwelling digger; excavates and maintains shared burrow with goby partner; loud snapping claw for defense
Speed: 25/100Aggression: 3/10diurnalSchooling (6+)
Breeding
Moderate
Common Diseases
💊 Vorticella💊 bacterial💊 molt failure
Expert Notes
Pairs with watchman gobies