Orange Line Goby (Amblygobius Decussatus)

Orange Line Goby (Amblygobius decussatus)

The Orange Line Goby, also known as the Crosshatch Goby or Orange-striped Goby, is a functional and attractive sand-sifting species. Unlike the larger, more common "Sleeper" gobies that tend to dump sand all over your corals, the Amblygobius genus is much more refined. In the reefs of Indonesia, they are frequently seen hovering just above the substrate, acting as a constant "janitor" for the sand bed.

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Key Information

• Common Names: Orange Line Goby, Crosshatch Goby, Orange-striped Goby

• Scientific Name: Amblygobius decussatus

• Origin: Western Pacific (Indonesia, Philippines, Vietnam to the Solomon Islands)

• Max Size: 9–10 cm (approx. 4 inches)

• Lifespan: 3–5 years

• Temperament: Peaceful; safe for community tanks

• Diet: Omnivore – Sand-sifter and filamentous algae eater

• Care Level: Easy to Moderate (requires a mature sand bed)

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Appearance & Identification

This goby has a delicate, intricate pattern that makes it stand out from other bottom dwellers:

• The Pattern: A pale, creamy-white body decorated with several horizontal orange-to-yellow lines. These lines are often intersected by vertical bars, creating a subtle "crosshatch" or "grid" effect.

• The Head: Features bright orange spots and lines around the eyes and gills.

• Body Shape: Slender and elongated with a rounded snout. It possesses two dorsal fins, which it uses to hover effortlessly.

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Behaviour & Tank Compatibility

• The Gentle Sifter: This fish feeds by taking mouthfuls of sand, filtering out tiny organisms (copepods, worms), and expelling the clean sand through its gills. Crucially, it usually stays close to the bottom while doing this, unlike some gobies that swim high and "rain" sand onto your corals.

• Algae Eater: Unique among many gobies, Amblygobius decussatus is known to nip at filamentous algae (green hair algae), helping to keep the rock-sand interface clean.

• Reef Safe: 100% Reef Safe. They are beneficial for the sand bed and will never bother corals or clams.

• Social Structure: Best kept singly unless the tank is very large or you have a confirmed mated pair. They can be territorial toward other sand-sifting gobies.

• Tank Mates: Excellent with peaceful fish like Firefish, Anthias, and Fairy Wrasses. Avoid keeping them with aggressive bottom-dwellers like large Dottybacks or aggressive Blennies.

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Ideal Tank Setup

• Substrate is Mandatory: You must have a fine-to-medium sand bed. They cannot survive in bare-bottom tanks or those with heavy, coarse gravel that might damage their gills.

• Tank Size: A minimum of 75L–115L (20–30 Gallons).

• Maturity: They do best in an established aquarium. A brand-new sand bed may not have enough micro-fauna to sustain them initially.

• Rockwork: Provide plenty of caves and overhangs. They will often dig a small "burrow" under a rock where they retreat at night.

• Lid: Like almost all gobies, they can be jumpy if startled. A secure lid is recommended.

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Dietary Needs

While they get some food from the sand, they need supplemental feeding:

• Natural Foraging: They will spend all day cleaning your sand and eating small amounts of algae.

• Prepared Foods: They readily accept frozen mysis, enriched brine shrimp, and sinking pellets.

• Feeding Tip: Ensure food actually reaches the bottom of the tank, as they are reluctant to swim to the surface to compete with faster fish.

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Why Choose the Orange Line Goby?

The Orange Line Goby is for the hobbyist who wants a clean sand bed without the "sand storms" caused by larger species. It is a beautiful, peaceful, and fascinating fish that provides a real service to your reef's ecosystem. Its ability to eat both sand-dwelling organisms and nuisance algae makes it a versatile utility fish for any Indonesian-themed marine aquarium.