Link's Goby (Amblygobius Linki) saltwater aquarium fish portrait

Link's Goby, Amblygobius linki, is a slender, torpedo-shaped sand sifter with a pearly whitish body marked by bold black horizontal stripes across the upper head and flanks, along with diffuse narrow side bars. The two dorsal fins stand at equal height and the tail is rounded, giving the fish a tidy, balanced profile as it hovers just above the substrate. The species ranges through the Western Central Pacific, including the Philippines and western New Guinea, where it occupies silty mud flats among mangrove roots, stream mouths, and occasionally shallow saline lakes. Adults reach roughly 3 inches.

A 30-gallon aquarium is the practical minimum for a single adult, and the layout matters more than the volume alone. Prioritize substantial open sandbed area for sifting and burrow construction rather than packing the display with rock, though a few secure crevices give the goby a sense of cover. A tight-fitting lid is essential, since a startled or harassed individual may leap from an open system. Introduce this goby only to a biologically established aquarium with a mature sandbed; immature systems carry ammonia and nitrite risk and rarely hold enough substrate life to sustain a grazing bottom-dweller. The species tolerates a degree of salinity variation, which reflects the brackish-influenced flats it inhabits in the wild.

This goby is an omnivore that feeds by taking mouthfuls of substrate and processing them for edible material, expelling clean sand through the gill covers. Natural foods include detritus, benthic invertebrates, zoobenthos, and zooplankton, and aquarium specimens will also crop some hair algae from the sandbed and adjacent surfaces. The small mounds of sifted sand left behind are a normal byproduct of this feeding style.

Supplement natural foraging with mysis shrimp, brine shrimp, calanus, carnivore-oriented frozen preparations, sinking pellets, and quality flakes, with occasional live foods to encourage a hesitant new arrival. Offer several small feedings across the day rather than a single large meal, since the fish grazes more or less continuously. Aquacultured specimens are strongly preferred, as wild-caught individuals have historically fared poorly in captivity. Even when a fish accepts prepared foods readily, an established sandbed remains an important part of its nutrition.

Mysis Shrimp Brine Shrimp Calanus Frozen Carnivore Preparations Sinking Pellets Marine Flakes Live Foods
Link's Goby is a peaceful, consistently active bottom-dweller that spends its day working the substrate, aerating sand and often excavating a retreat hole beneath a rock or overhang. It ignores unrelated tankmates almost entirely, but it can become territorial toward similarly shaped bottom-associated fishes, particularly in modest-sized aquariums where the two compete for the same floor space. Keep a single individual unless the fish are a confirmed male-female pair, and provide a correspondingly larger aquarium with ample open sand before attempting more than one.

Pair this goby with calm to moderately active community fishes and avoid pugnacious species or any predator large enough to swallow a 3-inch fish. It is reef safe and shows no inclination to pick at corals, sessile invertebrates, or other tankmates. The one practical consideration is its digging: redistributed sand and fresh mounds can bury or undercut frags and other bottom-mounted livestock, so place corals on rock or elevated perches rather than directly on the sandbed.

FAQ

Frequently Asked Questions

About the Link's Goby

  • Does Link's Goby need a mature sandbed?
    Yes. An established sandbed supplies the small organisms and detritus this goby forages on, and an immature system may offer too little food while exposing the fish to ammonia or nitrite.
  • Is Link's Goby suitable for a reef aquarium?
    Yes, it is reef safe and does not pick at corals or invertebrates. Keep in mind that its sifting and burrowing can shift sand and pile mounds around bottom-mounted livestock.
  • Can more than one Link's Goby be kept together?
    Keep one per aquarium unless the fish are a confirmed male-female pair. Multiple individuals require an aquarium considerably larger than the 30-gallon minimum, with extensive open sand for each fish.