HomeMarine aquarium fishGobies, blennies & dottybacksElegant firefish Elegant firefish (Nemateleotris decora) Scientific name: Nemateleotris decora Randall & Allen, 1973 The Elegant firefish (Nemateleotris decora) is a marine fish of the family Ptereleotridae. In the aquarium it needs water at 23–27°C (73–81°F). Native range: Indo-Pacific, Mauritius to Samoa, north to Ryukyu Islands, south to New Caledonia. Elegant firefish care at a glanceTemperature23–27°C (73–81°F) BiologyDorsal spines (total): 7; Dorsal soft rays (total): 27-32; Anal spines: 1; Anal soft rays: 28 - 31Source: FishBase, licensed CC BY-NC 4.0. Species factsScientific nameNemateleotris decoraFamilyPtereleotridae (Dartfishes)OrderPerciformes (Perch-like fish)ClassActinopterygii (Ray-finned fishes)Maximum length9.0Depth range25–70 m (82–230 ft)EnvironmentMarine; reef-associated; depth range 25 - 70 m, usually 25 - 70 mClimateTropicalDistributionIndo-Pacific: Mauritius to Samoa, north to Ryukyu Islands, south to New Caledonia.Conservation status (IUCN)Not EvaluatedThreat to humansHarmlessUsesAquarium: commercial More gobies, blennies & dottybacksFire gobyNemateleotris magnificaYellow prawn-gobyCryptocentrus cinctusPersian blennyEcsenius midasYellowhead jawfishOpistognathus aurifronsBrown dottybackPseudochromis fuscusSpotted prawn-gobyAmblyeleotris guttataSee all gobies, blennies & dottybacks SourcesTaxonomy, distribution and biology data: FishBase (Froese, R. and D. Pauly, eds.), licensed CC BY-NC 4.0.Last updated 27 September 2026