Common Name
Bluefin Notho, Rachow’s Killifish
Origin and Habitat
Nothobranchius rachovii is native to the floodplains of Mozambique and parts of southern Africa, particularly around Beira and the lower Zambezi region. During the wet season, they inhabit shallow pools, ditches, and temporary floodwaters that are rich in vegetation and micro-life. These environments are typically warm, sunlit, and still, with muddy or sandy bottoms and abundant leaf litter. When the rains recede, these pools shrink into smaller pockets of water, creating ideal breeding grounds for this brilliantly colored killifish. The water in their native range is generally soft and slightly acidic to neutral, with minimal flow and a rich layer of organic material.
Temperature and Water Conditions
Optimal water temperature ranges from 24°C to 28°C (75°F to 82°F). The water should be soft, slightly acidic to neutral (pH 6.0–7.0), and well-maintained with minimal flow. A well-planted tank with natural substrates and leaf litter mimics their natural habitat. Regular water changes are recommended to maintain water quality and prevent the buildup of organic waste.
Key Features
| Feature | Detail |
|---|---|
| Size | Up to 3.5 cm (1.4 inches) |
| Lifespan | 2 to 3 years |
| Behavior | Active during daylight, peaceful in groups |
| Compatibility | Best kept with non-aggressive, similarly sized fish |
FAQ
What is the ideal water temperature for Nothobranchius rachovii?
The ideal water temperature ranges from 24°C to 28°C (75°F to 82°F).
What type of substrate and plants are recommended for this species?
A muddy or sandy substrate is preferred. Include natural plants, leaf litter, and floating vegetation to replicate their native habitat.
How often should water be changed in a tank with this fish?
Regular water changes are recommended, ideally 25% every 2 to 4 weeks, to maintain water quality and prevent organic buildup.
Amelia Hughes –
The Bluefin Notho is a striking fish with vibrant blue fins. It thrives in a warm, well-planted tank with leaf litter. I’ve kept it for over a year and it remains active and healthy. The tank setup mimics its natural habitat well, and it’s a great addition to a community tank with non-aggressive species.
Cameron Lawrence –
This killifish is colorful and active during the day. I noticed it prefers still water with soft substrate. It does well in a small tank with floating plants. A bit shy at first, but settles into the environment after a week. Good for beginners interested in tropical fish with unique appearances.
Christopher Lawrence –
The fish arrived healthy and has been thriving in my 10-gallon tank. I added leaf litter and a few floating plants, and it seems to enjoy the natural setup. It’s peaceful and doesn’t compete with other fish. Very satisfied with the purchase.