Description
Nothobranchius guentheri (Redtail Notho / Guenther’s Nothobranch)
The Nothobranchius guentheri is a brilliantly colored annual killifish, prized for its striking red-and-blue patterning and lively personality. Males are especially vibrant, displaying bright turquoise-blue bodies with vivid red striping and a bold red tail, while females are more subdued in coloration. These fish are small but eye-catching, making them a standout choice for nano and species-only aquariums.
Native to seasonal pools and streams in Zanzibar and parts of East Africa, N. guentheri has adapted to a unique life cycle. In the wild, they inhabit temporary waters that dry up annually, with eggs surviving in the substrate until the rains return. In aquariums, this fascinating species thrives in stable, well-maintained conditions and can be bred by simulating its natural spawning behavior in peat or fine substrate.
Quick Facts:
-
Scientific Name: Nothobranchius guentheri
-
Common Names: Guenther’s Nothobranch, Redtail Notho
-
Origin: Zanzibar and East Africa (temporary pools and streams)
-
Max Size: ~2.5 inches
-
Temperament: Peaceful, best in species-only or carefully chosen community tanks
-
Diet: Carnivorous – live and frozen foods preferred (brine shrimp, daphnia, bloodworms, mosquito larvae)
-
Tank Size: 10+ gallons (species tanks recommended)
-
Water Parameters:
-
Temperature: 22–26°C (72–79°F)
-
pH: 6.0–7.5
-
Hardness: Soft to moderately hard (2–12 dGH)
-
-
Lifespan: 1–2 years (annual species with short natural lifespan)
-
Experience Level: Intermediate (due to specialized breeding and lifespan)
Why Choose Nothobranchius guentheri?
-
One of the most colorful and striking killifish species
-
Fascinating life cycle adapted to seasonal habitats
-
Perfect centerpiece for nano or species-only aquariums
-
A rewarding challenge for hobbyists interested in breeding killifish
