
Killifish, Rainbowfish, and Medaka
Nothobranchius guentheri
Nothobranchius guentheri
Photo: Jokuyken15 · CC BY 4.0 · Wikimedia Commons
Key facts
- Temperature22–26 °C
- pH6.5–7.5
- Minimum tank30 l
- Adult size5 cm
- Difficulty★★★☆☆
- TemperamentSemi-aggressive
- WaterFresh
Full profile
- Family
- Nothobranchiidae
- Origin
- Zanzibar and the coast of Tanzania
- Size
- 5 cm
- Temperature
- 22 – 26°C
- pH
- 6.5 – 7.5
- GH
- 4 – 15 °dGH
- Difficulty
- ★★★☆☆
- Water type
- tropical freshwater
- Swimming level
- medium
- Behavior
- semi-aggressive (males are prone to fighting)
- Minimum number of individuals
- 1 male and 2 females
- Minimum aquarium size
- 30 L
- Diet
- carnivore
- Reproduction
- Annual oviparous; eggs laid in peat that is kept dry
Notes: Males are red with blue-green scales and a red tail edged in black. Short lifespan, about one year.





