Gobies, blennies, and small marine fish
Helfrich's Firefish
Nemateleotris helfrichi
Photo: NPS photo - Bryan Harry - Waikiki Aquarium · Public domain · Wikimedia Commons
Key facts
- Temperature24–27 °C
- pH8.1–8.4
- Minimum tank100 l
- Adult size6 cm
- Difficulty★★★☆☆
- TemperamentPeaceful
- WaterMarine
- Reef safeYes
Full profile
- Family
- Microdesmidae
- Origin
- Central Pacific
- Size
- 6 cm
- Temperature
- 24 – 27°C
- pH
- 8.1 – 8.4
- Salinity
- 1.023 – 1.025
- Difficulty
- ★★★☆☆
- Water type
- marine
- Swimming level
- medium
- Behavior
- peaceful (shy)
- Minimum number of individuals
- 1 or a pair
- Minimum aquarium size
- 100 L
- Diet
- carnivore
- Reproduction
- oviparous
- Reef Safe
- ✅ Yes
Notes: Yellow head with violet highlights and a lavender body. It lives at greater depths than other dartfish and is expensive.
