Killifish – Nothobranchius Rachovii 2-3cm – MALE

Nothobranchius Rachovii Male – Eye-Catching Colours That Fade Far Too Soon

Nothobranchius Rachovii Male delivers intense blue and red fin colours along with lively behaviour in a compact aquarium package. Aquarists choose this annual killifish to witness a complete life cycle that unfolds in under a year. Males stand out sharply against females, who stay much plainer. Their rapid growth and short existence make them a favourite for breeders who enjoy raising new generations regularly. This overview shares practical steps to care for them properly.

Size and Lifespan

Adult males normally reach 5–6 cm, while females stay closer to 4–5 cm. Most live 6–9 months in captivity, although top conditions can push them toward 12–15 months. Their brief lifespan requires keepers to plan ahead for breeding.

Ideal Tank Setup

Use soft, slightly acidic water kept between 24–28 °C with gentle flow from a sponge filter. Add dark substrate plus live or silk plants for cover. To replicate its natural habitat, include a spawning container with peat moss or coconut coir and fit a very secure lid to stop escapes.

Compatible Tank Mates

Keep aggression in check by limiting numbers and providing extra hiding places. Fin-nipping often toward slow or long-finned species. Suitable tank mates include very small, fast-swimming, peaceful fish such as certain pencilfish or endler livebearers in larger setups, but a species-only tank remains safest.

Diet and Feeding

Feed high-protein items multiple times daily to match their accelerated metabolism. Newly hatched brine shrimp, microworms, frozen daphnia, and bloodworms produce excellent results. Quality sinking pellets or flakes serve asan occasional variety, yet live and frozen foods should form the bulk of meals.

Breeding and Behaviour of Nothobranchius Rachovii Male

Males court females aggressively and defend favoured spots, so keep one male with at least three females to avoid over-chasing. Females deposit eggs daily into peat or coir when conditioned well. Collect the medium, dry it slowly until just moist, seal in a bag for 8–12 weeks, then re-wet small amounts to hatch fry that grow to maturity in roughly four weeks.

Species Overview

• Species – Nothobranchius rachovii
• Common Name – Rachov’s Nothobranchius / Bluefin Notho
• Origin – Seasonal pools in coastal Mozambique
• Diet – Carnivore
• pH Range – 6.0–7.5
• Temperature – 24–28 °C
• Breed Type – Egg Layer
• Current Size – 2-3 cm
• Max Size – Approximately 6 cm
• Tank Size – 40 litres minimum for a trio

FAQs about Nothobranchius Rachovii Male

What size tank is ideal for Nothobranchius Rachovii Male?
40 litres works well for a small group and allows natural swimming space.

Can they live with other fish?
They can share with select tiny peaceful species, but many keepers prefer a species tank to limit nipping.

How often should I feed them?
Offer food at least twice a day, ideally three small meals when possible.

Do they need to be in groups?
A single male with multiple females displays typical behaviour; solitary housing suits nano tanks only.

How long do they live?
Expect 6–12 months on average, with 15 months possible under perfect maintenance.

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