Fire Goby (Nemateleotris magnifica) M – 8 cm

Overview

The Fire Goby Nemateleotris magnifica is one of the most eye-catching small marine fish available to reef keepers, prized for its vivid orange-red body, elongated dorsal fin and elegant hovering behaviour. Also known as the Fire Dartfish or Magnificent Dartfish, this species brings constant movement and colour to the upper and middle levels of a saltwater aquarium without being aggressive or demanding. The medium size offered here is approximately 8 cm, making it a great choice for established marine systems where a healthy, settled specimen can be introduced with care.

Fire Gobies are generally peaceful, reef-safe and best kept singly or as a bonded pair in suitably sized aquariums. They are known for their shy but inquisitive nature, often darting into crevices or burrows when startled before returning to hover in the water column. Their calm temperament and striking appearance make them a favourite for mixed reef tanks, fish-only marine setups and aquarists looking for a colourful species with personality.

At Tropical Fish Co, we select healthy marine livestock and aim to provide a smooth buying experience with fast UK delivery and a live arrival guarantee, so your new fish arrives in the best possible condition.

Care at a Glance

Origin & Natural Habitat

Nemateleotris magnifica is native to the tropical Indo-Pacific, where it inhabits coral reef slopes, outer reef drop-offs and rubble zones with access to crevices and sheltered burrows. In the wild, Fire Gobies often hover just above the substrate, retreating quickly into holes or caves when threatened. They are commonly found in pairs or small loose groups, especially in areas with moderate current and plenty of hiding places.

The species’ natural behaviour explains much of its husbandry in captivity: it appreciates open swimming space, but also needs secure shelter and a calm environment. A tank with live rock, caves and overhangs helps the fish feel safe and display its natural hovering posture. Because it is a reef-associated species, it is well suited to marine aquariums that mimic a natural coral habitat.

Tank Setup & Water Parameters

For best results, house Fire Gobies in a mature marine aquarium of at least 100 litres, though larger systems are always preferable, especially if keeping more than one or alongside other active fish. A tight-fitting lid is strongly recommended, as dartfish are excellent jumpers when startled. Fine sand is not essential, but a stable aquascape with plenty of rockwork, ledges and bolt-holes is important.

Water quality should be excellent and stable. Fire Gobies are sensitive to poor conditions and sudden changes, so use a reliable filtration system, regular water changes and careful acclimation. They prefer a salinity typical of reef aquariums, strong oxygenation and moderate flow rather than direct blasting current. Avoid placing them in tanks with aggressive tank mates or overly boisterous species that may intimidate them into hiding or prevent feeding.

Recommended parameters are 24–27°C, pH 8.1–8.4 and stable marine salinity around 1.023–1.025 specific gravity. As with all marine fish, consistency is more important than chasing exact numbers. A mature aquarium with low nitrate and minimal ammonia or nitrite is essential for long-term success.

Feeding Guide

Fire Gobies are carnivorous micro-predators in nature, feeding on tiny crustaceans and zooplankton. In the aquarium they do best on a varied diet of high-quality marine frozen foods and suitably sized prepared foods. Offer mysis shrimp, enriched brine shrimp, copepods, finely chopped seafood and marine pellets or granules designed for small carnivorous fish.

New arrivals may be shy at first, so feed small amounts several times a day if possible, especially during the settling-in period. Once comfortable, Fire Gobies usually become confident feeders. Because they are small and active, they benefit from frequent feeding with appropriately sized food rather than large heavy meals. A varied diet helps maintain colour, condition and immune health.

Tank Mates / Compatibility

Fire Gobies are peaceful and generally reef-safe, making them suitable for a wide range of community marine setups. Ideal tank mates include other calm reef fish such as clownfish, blennies, small wrasses, chromis, cardinalfish and gobies of compatible temperament. They also coexist well with corals and most invertebrates, provided the aquarium is not home to predatory species.

They should be avoided with aggressive or highly territorial fish that may bully them, including large dottybacks, hawkfish, triggerfish, puffers and some larger wrasses. Very boisterous tank mates can cause stress, reduce feeding and lead to jumping. If keeping more than one Fire Goby, introduce them carefully and ensure the tank is large enough with plenty of hiding spaces. A bonded pair may be kept together if introduced correctly, but two unrelated adults can be territorial in smaller aquariums.

Because they are prone to jumping, a secure cover is essential. This is especially important during acclimation and after maintenance when fish may be more skittish than usual.

Why Buy from Tropical Fish Co

When you buy a Fire Goby from Tropical Fish Co, you are choosing a retailer that understands the needs of marine livestock and the importance of careful handling. We prioritise healthy stock, sensible packing and reliable service, with fast UK delivery to help your fish reach you quickly and safely. Our live arrival guarantee gives you added confidence when ordering online, and our team is committed to supporting customers with practical advice on acclimation, feeding and long-term care.

Whether you are adding colour to an established reef or looking for a peaceful, characterful fish for a mature marine system, the Fire Goby is a superb choice. With the right setup, stable water conditions and a calm community, this elegant species will reward you with constant movement, striking colour and natural behaviour that never gets old.