Hi Fin Goby (Stonogobiops Nematodes) saltwater aquarium fish portrait

Stonogobiops nematodes is a small shrimp goby distinguished by elongated black spines in the first dorsal fin, which stand upright like a banner while the fish hovers above its burrow. The body is whitish to silver-white, crossed by bold diagonal brown-to-dark bands, and the face or forehead carries a wash of yellow. The species ranges through the Indo-West Pacific, with records from the Seychelles, the Philippines, Bali, and Indonesia, where it occupies deep coastal reef slopes, sand flats, and sand-rubble bottoms. Adults remain modest in size, reaching roughly 3 inches.

Adult housing begins at 30 gallons, with the extra volume giving the goby a defensible burrow territory and enough distance from other bottom-oriented fish. Build the display around live rock or secure rocky crevices for shelter, and pair that structure with an open sand bed of at least a few inches that includes movable rubble, shell fragments, or coral pieces the goby and its shrimp partner can use as roof and wall material. Set rockwork on the bottom glass or otherwise stabilize it so persistent excavation cannot undermine the structure, and leave clear space around the burrow entrance. A tight-fitting cover is important, since this goby will jump from an open aquarium. Stable water quality matters, and a mature, well-established marine system suits the species best.

In the wild, this goby takes tiny benthic invertebrates and zooplankton drifting near the substrate, and captive feeding should mirror that carnivorous, small-particle diet. Mysis shrimp, vitamin-enriched brine shrimp, krill, finely chopped raw shrimp or fish flesh, small crustaceans, zooplankton, and appropriately sized sinking carnivore pellets are all accepted. Because the mouth is small, chop larger items and choose sinking rather than surface foods so the goby can feed from its preferred position near the sand.

Feed at least twice daily, and ideally three small meals or several light feedings spread through the day, particularly while a new fish establishes itself. Recent arrivals frequently stay inside the burrow and may refuse food for several days. Direct small portions toward the burrow entrance with a turkey baster until the fish begins to feed reliably, and confirm it is eating before adding competitive tankmates.

Mysis Shrimp Vitamin-Enriched Brine Shrimp Krill Chopped Shrimp Chopped Fish Flesh Zooplankton Sinking Carnivore Pellets
Expect a passive, retiring fish that spends most of its time hovering just above the substrate, dropping into its burrow at the first sign of disturbance and rising again with the dorsal spines erect. Wild individuals occur in pairs over a burrow shared with the pistol shrimp Alpheus randalli, a partnership worth reproducing in the aquarium: the shrimp excavates and maintains the tunnel while the goby stands watch. The shrimp is not strictly required, though its presence brings out far more natural activity. Territorial disputes are directed at conspecifics and similar shrimp gobies, so keep only a confirmed male-female pair together rather than combining unsexed individuals, which risks two males fighting in confined quarters.

This goby is peaceful toward unrelated community fish and does not trouble corals, making it a good fit for reef systems. Choose calm tankmates and avoid groupers, dottybacks, triggerfish, aggressive angelfish, and other boisterous species that will intimidate a bottom-dwelling fish and keep it from feeding. Coral safety is well established, and no specific threat to ornamental shrimp, crabs, snails, or clams has been documented, although a cautious eye on very small motile invertebrates is reasonable in a heavily stocked reef.

FAQ

Frequently Asked Questions

About the Hi Fin Goby

  • How large an aquarium does an adult Hi Fin Goby need?
    Plan on a minimum of 30 gallons for an adult. The additional footprint gives the goby a stable burrow territory and keeps it well separated from peaceful tankmates.
  • Does this goby require a pistol shrimp?
    No, a shrimp partner is not strictly necessary. However, pairing it with Alpheus randalli, which maintains the shared burrow while the goby watches for danger, produces far more natural and engaging behavior.
  • Is the Hi Fin Goby safe in a reef aquarium with invertebrates?
    Yes, it is reef safe and does not damage corals. Its documented natural associate is the pistol shrimp Alpheus randalli, and no specific risk to snails, crabs, or clams has been established.