Max Size: 6cm

Bluefin Notho (Nothobranchius rachovii)

The Bluefin Notho is an ideal fish for the nano or planted aquarium and will add some vibrant colour and activity to it. However, This Killifish is a shy little fish, and you should choose their tankmates carefully as they can be out-competed for food so they would probably fair better with the same or similarly sized species.

This Killifish is not demanding and can adapt to a wide variety of water conditions.

Most individuals of this species are blue and orange, exhibiting vertical dark orange splashes along with their bright blue bodies. The fins of this Killifish are typically blue with dark orange splotches, and the caudal fin is edged in orange. There is also a black variety which has much darker colours and a red variety which has a redhead with turquoise highlights.


Bluefin Notho
Nothobranchius rachovii
Bluefin Notho
Nothobranchius rachovii
Quick Facts
Scientific NameNothobranchius rachovii
Other NamesBluefin Nothobranch, Rachovii Killifish
OriginsMozambique, South Africa
Aquarium LevelBottom
DifficultyBeginner - Intermediate
Best kept asGroups 5+
Lifespan1 -2 years
Water Parameters
Water TypeFreshwater
PH6.0 - 7.5
KH3 - 8
68 - 75℉
20 - 23.9℃


In the home aquarium, the Bluefin Notho will readily accept most good quality dried foods such as granules, flakes and sinking pellets. These modern food products have been developed to provide all adequate nutrition to maintain your fish's health and dietary requirements.

Providing additional foodstuffs such as live, frozen, and freeze-dried meals such as bloodworm, daphnia, and tubifex once or twice a week will provide additional benefits to your fish's health and well-being but is not a must for this fish.

It should be noted that bloodworms should only be given as an occasional treat and should not be used as the staple diet as they are difficult for fish to digest and can potentially cause blockages.

This fish is an omnivore in the wild, meaning it will consume some vegetable matter. Although most modern fish foods take this into account and include them in their products, you can still supplement your fish's diet with blanched vegetables such as spinach, broccoli, and zucchini. Ensure you do not overfeed your fish and remove any leftovers the following day.

Sexual Dimorphism

It is relatively straightforward to determine males from females. Males grow larger and are far more colourful than females, whereas females are more subdued and neutral in colour and form.

Other Killifish of interest

American Flagfish(Jordanella floridae)
Blackfin Pearl Killifish(Austrolebias nigripinnis)
Blue Striped Rivulus Killifish(Rivulus Xiphidius, Laimosemion xiphidius)
Bluefin Killifish(Lucania goodei)
Chevaliers Epiplatys Killifish(Epiplatys chevalieri)
Christys Killifish(Aphyosemion christyi)
View all Killifish
Date Added: 12/10/2020 - Updated: 10/08/2022 11:16:33