
Purple firefish
Nemateleotris decora
Shyer than the firefish, hovering low over rubble to pick plankton.
The Purple firefish (Nemateleotris decora) is a tropical marine fish of the family Gobiidae. It lives on and around reefs, between 25 and 100 m deep. Adults grow to about 7 cm; the largest on record measured 9 cm (total length). In the aquarium it needs a tank at least 60 cm long and water at 23–27 °C.
- Size
- 7 cm
- Smallest tank
- 60 cm
- Temperature
- 23–27 °C
- Care
- Easy
In the aquarium
Temperature23–27 °C
pH7.8–8.5
- Temperament
- Peaceful
- Diet
- Carnivore
- Activity
- Calm
- Water layer
- Mid water
- Group
- Lives on its own
- Coral
- Reef safe
These values are compiled from real species data, and the LumaReef simulation is built to keep them true to life.
Which tank it fits
- Nano60 cm · 65 litres8 of them
- Standard90 cm · 180 litres22 of them
- Wide120 cm · 300 litres37 of them
- Living room180 cm · 650 litres81 of them
- Showcase250 cm · 1,200 litres150 of them
- Gallery300 cm · 1,440 litres180 of them
Who it lives with
Gets along87 species
- Percula clownfish
- Green chromis
- Cherub angelfish
- Carpenter's flasher wrasse
- Court jester goby
- Royal gramma
- Falco hawkfish
- Scooter dragonet
- Orchid dottyback
- Swissguard basslet
- Chalk bass
- Banggai cardinalfish
- Pajama cardinalfish
- Yellowstriped cardinalfish
- Clownfish
- Yellowtail damselfish
- Azure damselfish
- Yellow watchman goby
- Fire goby
- Tailspot blenny
- Flame hawkfish
- Mandarinfish
- Talbot's damselfish
- Bartlett's anthias
Caution1 species
Narrow shared temperature range
Not together11 species
Aggressive with peaceful
These two do not get along
In the wild
- Water type
- Marine
- Climate zone
- Tropical
- Habitat
- Coral and rocky reefs
- Largest on record
- 9 cmtotal length
- Aquarium trade
- Traded commercially
Depth
surface
25 m100 m
Conservation status
Classification
- OrderGobiiformes
- FamilyGobiidae
- GenusNemateleotris
- SpeciesNemateleotris decora
- Described byAllen & Randall, 1973
In other languages
- English
- Decorated Dartfish
- German
- Veilchenschwanz-Flügelgrundel
- Spanish
- Gobio de Fuego Elegante
- French
- Eleotris décoré
- Italian
- Ghiozzo di fuoco elegante
- Russian
- Красноплавниковый нематэлеотрис
- Japanese
- アケボノハゼ
- Chinese
- 華麗線塘鱧
Quick answers
- Purple firefish size: how big does it get?
- Adults reach about 7 cm. The largest on record measured 9 cm (total length). Record sizes among the 75 Gobiidae species on LumaReef: 1.3 cm (Creamback Dwarfgoby) to 55.3 cm (Violet Goby).
- Purple firefish tank size: what is the minimum?
- A tank at least 60 cm long. In LumaReef that is the Nano tank or larger.
- Purple firefish water parameters: what does it need?
- Temperature 23–27 °C, pH 7.8–8.5. Close to what most Gobiidae on LumaReef need (22–27 °C).
- Purple firefish tank mates: what can it live with?
- It gets along with 87 of the 99 reef species in the catalogue, such as Percula clownfish, Green chromis, and Cherub angelfish.
- Purple firefish: alone or in a group?
- It can be kept on its own.
- Purple firefish and corals: is it reef safe?
- Yes, it leaves corals alone.
- Purple firefish depth: how deep does it live?
- In the wild, 25 to 100 m down. Deeper than most Gobiidae on LumaReef (2–30 m).
Similar species
Sources
Purple firefish: compiled from these references.









