Rachow's killifish

Nothobranchius rachovii

Family : Nothobranchiidae

FishFreshwaterkillifish

Rachow's killifish is an annual fish with bright colors, highly prized by specialized aquarists.

Rachow's killifish — photo 1 sur 4
Andreas Wretström, 2003. Resident in Uppsala, Sweden. · Wikimedia Commons · CC BY-SA 2.51 / 4
Popularity
Community fish
classic in freshwater aquarium
Availability
Common in shops
Shop availability
IUCN Status
NT
Near Threatened
Biotope
East Africa
Grands lacs africains (hors Malawi/Tanganyika), Madagascar.

Description

Nothobranchius rachovii reaches 5-6 cm. The male is very colorful: turquoise blue body with red scales, red and blue fins. The female is dull, brown. The fins are rounded. It is a surface fish. It lives in small groups. Its life cycle is annual: it hatches, grows, reproduces and dies in less than a year. The eggs can remain in diapause for several months. It is very active and territorial among males.

Habitat

Region :

This killifish lives in temporary pools and seasonal swamps, in very soft and acidic water. The bottom is muddy, rich in plant debris. The water warms up strongly in the dry season. The fish die when the pool dries up, but the eggs survive in the mud.

Distribution :

Recommended parameters

Temperature2428 °C
pH66.5
GH25 °dGH
KH13 °dKH
NO₃
≤ 10 mg/L
PO₄
≤ 0.2 mg/L

Care

Difficulty
4/5
Diet
Carnivore
Min. tank
30 L
Min. group
1
Adult size
6 cm
Lifespan
1 years
Temperament
Territorial
Propagation
Ovipare, ponte dans la tourbe. Œufs à diapause : conserver la tourbe humide à 22°C pendant 3-6 mois, puis ajouter de l'eau douce pour l'éclosion.

Care notes

A specific tank of 30-50 L for a pair or trio. Water should be very soft (GH 2-5), acidic (pH 6.0-6.5), temperature 24-28°C. A gentle filter, without strong current. Provide fine plants (Java moss) and a peat substrate for spawning. Carnivorous: accepts small insects, artemia, daphnia. Do not mix with other fish. Males are aggressive towards each other. Reproduction requires collecting eggs in peat and storing them moist.

Similar species

Espèces proches, même habitat ou même maintenance

References