The Nothobranchius kisaki is a stunning and rare annual killifish native to eastern Tanzania, where it inhabits temporary rain-fed pools during the wet season. Known for its brilliant orange-red fins, iridescent turquoise to blue-green body, and characteristic striped or speckled pattern, this species grows to 3–4cm and captivates any aquarist seeking both beauty and biological intrigue.

Like all Nothobranchius, N. kisaki has a short natural lifespan, completing its entire life cycle in a matter of months in the wild. However, under stable tank conditions, it can live longer, and with proper care, it can be bred for multiple generations in captivity. This makes it an exciting choice for dedicated killifish keepers and breeding enthusiasts.

🐠 Key Features:

• Scientific Name: Nothobranchius kisaki

• Common Name: Kisaki Killifish

• Size: 3–4cm

• Lifespan: 4–10 months (potentially up to 1 year in tanks)

• Temperament: Peaceful, non-aggressive

• Difficulty Level: Moderate to Advanced

• Origin: Tanzania (East African seasonal wetlands)

• Best kept in species-only tanks for breeding success and comfort

🌊 Water Conditions

This species thrives in soft, slightly acidic water with minimal flow and low lighting, mimicking the murky, plant-rich pools of its natural habitat.

• Temperature: 22–26°C (72–79°F)

• pH: 6.0–7.0

• Hardness: 1–6 dGH

• Tank Size: Minimum 10 gallons

• Filtration: Sponge filter or low-flow system

• Lighting: Low to moderate (floating plants or tannins recommended)

• Water Type: Freshwater (blackwater ideal)

Use peat moss or coconut fiber as substrate to support natural spawning behavior.

🐟 Tank Mates

Due to its small size, gentle nature, and breeding focus, N. kisaki is best kept in species-only aquariums.

Avoid:

• Fast or aggressive species

• Bottom dwellers that stir substrate

• Shrimp or inverts (may be preyed on)

They prefer quiet, dim environments where they can rest, explore, and spawn without disturbance.

🍽️ Feeding Habits

Nothobranchius kisaki is a micropredator that thrives on a high-protein, meaty diet.

Recommended foods:

• Live or frozen baby brine shrimp

• Daphnia, grindal worms, microworms

• Frozen cyclops, bloodworms

• High-quality micro pellets (optional)

Feed 1–2 times daily, offering small, frequent meals to support their fast metabolism and coloration.

🧼 Care and Breeding Tips

As a true annual species, N. kisaki lays its eggs in soft substrate, which must undergo a dry incubation period to hatch properly.

✅ Breeding steps:

1. Provide spawning media (peat or coco fiber)

2. Let breeding pair or trio spawn for 2–3 weeks

3. Remove and partially dry the substrate in a sealed container

4. Incubate for 6–10 weeks at room temperature

5. Re-wet substrate in a shallow tank to trigger hatching

6. Feed fry with infusoria, then live baby brine shrimp

Perform weekly water changes (20–30%), and ensure tanks have tight lids, as killifish are agile jumpers.

🌿 Why Choose Nothobranchius kisaki?

The Nothobranchius kisaki is a dazzling choice for aquarists interested in rare species, seasonal breeding, and compact fish with big personality. With its vivid coloration and fascinating life cycle, this fish offers both visual appeal and a rewarding experience for those ready to engage with its unique biology.

Celebrate the rhythm of nature—add Nothobranchius kisaki to your collection today!