Nothobranchius guentheri
Nothobranchius guentheri
The Nothobranchius guentheri (Nothobranchius guentheri) is a semi-aggressive fish that's a good step up once you have a little experience. Give it a tank of at least 40 litres (11 US gallons), water held at 75-82°F, and a pH of 6-7.5.
Captive lifespan reflects typical experience in a home aquarium, not maximum recorded age; genetics, sourcing, and care vary.
Natural distribution
Africa
- Africa
Regional colours match the stocking calculator's origin map.
Nothobranchius guentheri Tank Setup
A tank of at least 40 litres (11 US gallons) at 75-82°F and pH 6-7.5 suits them well. Livebearers breed quickly, so plan for the fry and keep an eye on your male-to-female ratio.
What Do Nothobranchius guentheris Eat?
They have small mouths, so stick to small foods: crushed flake, fine granules, and now and then a treat of frozen or live foods such as daphnia or baby brine shrimp. Anything too large simply gets ignored.
Nothobranchius guentheri Tank Mates
Annual killifish. Males fight vigorously. Eggs must be stored in damp peat at 25C for 3 months to hatch. Lifespan ~1 year. The Nothobranchius guentheri is semi-aggressive, which is the first thing to weigh up when you choose tank mates. Good matches come down to the whole stocking list working together - temperature, tank size, and temperament - not any single label. Before you buy, run your full stocking list through our stocking calculator. It weighs temperament, adult size, and water needs together, which a single species page can't do on its own.
Are Nothobranchius guentheris Good for Beginners?
Doable once you test water regularly and catch problems before fish look sick. If this is your first tank, pick something more forgiving and come back later.
Nothobranchius guentheri - frequently asked questions
What size tank do Nothobranchius guentheris need?
Nothobranchius guentheris need a tank of at least 40 litres (11 US gallons). A bigger tank is always easier to keep stable, and gives them more room to settle in and behave naturally.
What water parameters do Nothobranchius guentheris need?
Keep them at 75-82°F with a pH of 6-7.5, steady rather than chased to an exact figure. In a cycled tank, ammonia and nitrite should both read 0 ppm, with nitrate kept low through regular water changes.
What do Nothobranchius guentheris eat?
Nothobranchius guentheris have small mouths, so they need small foods. Crushed flake and fine granules form the staple, with the occasional treat of frozen or live foods such as daphnia or baby brine shrimp. Feed small amounts once or twice a day, and remove anything they don't eat.
Are Nothobranchius guentheris good for beginners?
Nothobranchius guentheris are best for keepers with a little experience. They are manageable once you test water regularly and catch problems early; a complete beginner may prefer something more forgiving first.
Building a community? Run the full list through the stocking calculator before you add anything else.
Great tank mates
Chosen from temperament, overlapping temperature/pH bands, plausible minimum tank footprints, and size versus yours in App-aquatic data. Hobby nuance always wins - verify stocking and temperament before purchasing.
Fish to avoid mixing with Nothobranchius guentheris
These well-known species are commonly sold alongside this fish but are not recommended tank mates - verify before purchasing.
- OscarPredator - Oscar will eat or injure smaller tank mates
- Pea PufferPredator - Pea Puffer will eat or injure smaller tank mates
- Betta (Male)Predator - Betta (Male) will eat or injure smaller tank mates
