Nothobranchiidaefreshwater fishintermediate

Rachow's Nothobranch

Nothobranchius rachowi

Also known as: Rachow's Nothobranch, Rachow's Killifish

Origin: Coastal Tanzania

R

Water Parameters

Temperature2026 °C
15 °C35 °C
pH67.5
49
GH (Hardness)210 °dGH
0 °dGH30 °dGH
KH (Alkalinity)04 °dKH
0 °dKH20 °dKH

Quick Stats

Max Size
5 cm
Min Tank
30 L
Lifespan
1
Swimming Level
middle
Schooling
No
Diet
carnivore
Temperament
males highly territorial toward conspecifics

About

Nothobranchius rachowi is a small annual killifish native to temporary pools and floodplains in coastal Tanzania. Males are renowned for their extraordinary colouration — a dense mosaic of red and turquoise-blue scales that makes them one of the most coveted Nothobranchius in the hobby. Like all annual killifish, they complete their entire life cycle before seasonal pools dry up, and eggs can be stored in moist peat through a dry period.

Care Guide

Water: 20–26 °C, pH 6.0–7.5, soft to moderately hard water. Tank: 30 L species tank with peat substrate for egg deposition; tight-fitting lid essential. Feeding: Live or frozen Daphnia, Artemia, micro worms, and small insects; feed daily. Behaviour: Males are highly territorial; keep one male with two or three females. Compatibility: Species tank strongly recommended; avoid any fin-nipping or boisterous fish.

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