Orangemarked Goby

Amblygobius decussatus

Saltwater Fish Species Group: Gobies Family: Gobiidae

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Water parameters

Temp 76-80 F Temperature

Maintaining a stable and appropriate temperature is critical for the survival of aquatic life.

pH 7.8 - 8.4 potential of Hydrogen

Measuring the acidity or alkalinity of water on a 0–14 scale, where 7 is neutral, 7 is alkaline.

NO3 1-20 ppm Nitrate

While less toxic than ammonia, high nitrate levels (above 40–80 ppm) are important to monitor because they can cause fish stress, stunted growth, and harmful algae blooms.

NO2 <0.0001 ppm Nitrite

It is a highly toxic, intermediate compound in the nitrogen cycle produced from broken-down ammonia

PO4 0.01 - 0.1 ppm Phosphate

It is essential for plant development but must be managed, as excess levels trigger nuisance algae blooms and inhibit coral calcification.

NH3 <0.1 ppm Ammonia

It is the primary killer of aquarium fish, causing gill damage, stress, and death

Ca 380 - 450 ppm Calcium

Supporting the growth, skeletal structure, and shell formation of corals, mollusks, crustaceans, and coralline algae

KH 8 - 12 dKH Alkalinity

It acts as a shield, neutralizing acids to prevent dangerous pH "crashes" that can harm fish, corals, and plants.

Mg 1200 - 1400 ppm Magnesium

It enables coral growth by supporting skeletal formation, assists in metabolic processes, and ensures that calcium is available for corals, clams, and coralline algae.

SG 1.023 - 1.026 SG Salinity

Essential for maintaining stable, natural water parameters, proper osmoregulation, and stress-free environments for marine fish and corals

ORP 250 - 400 mV Oxidation-Reduction Potential

A higher positive mV indicates clean, oxygen-rich water with high water quality, while low readings indicate high pollution.

About Orangemarked Goby

General information

The Orangemarked Goby originates from the rubble zones of the Solomon Islands. They are a sand sifting species that will continually process mouthfuls of sand in their search for food. They have an elongated body with bright orange markings across the face that fade into a yellow coloration extending along the length of the body. The horizontal lines are joined together with vertical lines across the body, giving it a checkerboard appearance. The Orangemarked Gobies are generally peaceful fish that will aid in keeping your sand bed aerated and clean. It should be housed in an established aquarium with plenty of live rock and a substrate of fine to moderately sized sand. A tight-fitting canopy is necessary to prevent the Orangemarked Goby from jumping out of the aquarium. It will rarely become aggressive towards other fish, but is territorial, and will fight with its own kind unless they are a mated pair.

Cautions

Gobies are considered jumpers make sure your aquarium has a tight-fitting canopy or screen cover to prevent the Gobie from jumping out of your aquarium. Gobies have been known to jump through the smallest of holes in a canopy. 

Cautions

Gobies are considered jumpers make sure your aquarium has a tight-fitting canopy or screen cover to prevent the Gobie from jumping out of your aquarium. Gobies have been known to jump through the smallest of holes in a canopy.

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