Bullet Goby

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The Bullet Goby (Amblygobius phalaena), also known as the Sleeper Banded Goby, is a hardy and efficient sand-sifting fish prized for its ability to keep aquariums clean by aerating and filtering the substrate. Recognized by its elongated body, horizontal brown and white stripes, and striking blue markings on the face, this peaceful species adds both function and beauty to a marine aquarium. Ideal for reef and community setups, the Bullet Goby thrives in well-established tanks with a sandy substrate.

Care Level:

Ease: Beginner to intermediate – requires a mature tank with a fine sand bed for foraging.

Water Conditions:

• Salinity: 1.020–1.025 specific gravity
• pH: 8.1–8.4
• Temperature: 72–78°F (22–26°C)

Tank Requirements:

• Minimum tank size: 30 gallons (larger recommended for pairs or multiple sand sifters)
• Requires a fine sand substrate to support natural feeding behavior
• Provide live rock caves or burrows for shelter and security

Temperament:

Behavior: Peaceful and active, spends most of its time sifting through the sand in search of food.

Compatibility:

• Best suited for peaceful community aquariums with other non-aggressive fish
• Avoid housing with large predatory fish that may see it as prey

Size:

• Adult Length: 5–6 inches (12–15 cm)
• Growth: Moderate, requiring adequate space for foraging

Reef Compatibility:

• Reef-safe – does not harm corals or invertebrates
• Helps keep sand beds clean and aerated, reducing detritus buildup

Additional Notes:

Bullet Gobies are omnivores that require a diet of high-quality sinking pellets, frozen mysis shrimp, brine shrimp, and natural foraging in the sand bed. A well-established tank with a thriving population of microfauna will support their feeding habits. While they are generally hardy, they can be prone to jumping, so a secure aquarium lid is recommended. With proper care, they can live 5–8 years, making them a valuable and attractive addition to marine aquariums.