Nothobranchius kilomberoensis 2,5 - 3, (Nothobranchius kilomberoensis) — 2,5-3,5cm

Overview

The Nothobranchius kilomberoensis is a striking, short-lived Tanzanian annual killifish native to seasonal pools and floodplains of the Kilombero Valley, Tanzania. Reaching just 2.5cm in length, this peaceful species is prized for its vivid colors and fascinating breeding cycle. As an annual killifish adapted to temporary habitats that dry seasonally, Nothobranchius kilomberoensis has a compressed life cycle and unique reproductive biology. Available for sale UK from Tropical Fish Co, this rare species rewards dedicated aquarists with captivating displays and unique behaviour.

Appearance and Coloration

This species displays stunning colouration with a compact, slender body adorned in vivid blues, reds, and yellows with intricate patterning that creates a jewel-like effect. Males are intensely coloured with pronounced finnage and a bold presence, especially during courtship. The scales shimmer with metallic iridescence under subdued lighting. Females are smaller, plumper, and more subdued in colour with shorter finnage. In a planted tank with dark substrate, the colours become even more vibrant and eye-catching.

Natural Habitat

Nothobranchius kilomberoensis inhabits seasonal pools and floodplains of the Kilombero Valley, Tanzania. These temporary water bodies fill with water during the wet season and dry completely during the dry season. The water is typically soft, slightly acidic to neutral, and well-vegetated, with a substrate of mud and organic debris. During the wet season, adults spawn rapidly; as pools dry, adults perish while eggs remain dormant in dried substrate, hatching when rains return months later.

Aquarium Setup

A minimum 30-litre aquarium is sufficient for a pair or small group. Use a fine sand or soft peat substrate to replicate the natural spawning medium. Include live plants such as Cryptocoryne, Java moss, and floating species like Salvinia or Limnobium. Provide spawning mops or peat moss for egg deposition. Lighting should be subdued, and filtration gentle to avoid strong currents. A secure, tight-fitting lid is essential, as killifish can jump. Maintain excellent water quality and cooler temperatures (21-25°C).

Feeding and Diet

As a carnivore, this species requires a varied, protein-rich diet to maintain health and colour. Offer small live and frozen foods such as bloodworms, daphnia, brine shrimp, and insect larvae daily. Will also accept high-quality micro pellets, but live and frozen foods help maintain condition and breeding readiness. Feed small portions twice daily, removing uneaten food promptly to maintain pristine water quality. Variety and freshness are critical for optimal health and vibrant colouration.

Behaviour and Temperament

This is a peaceful species that spends most of its time exploring the lower and middle water column. Males may display to each other during courtship with flared fins and vibrant colour displays, but serious aggression is rare. These fish have a naturally short lifespan of typically 6-12 months, reflecting their annual biology. They appreciate a dimly lit aquarium with plenty of cover. They are not competitive feeders, so avoid housing them with boisterous or fast-moving species.

Suitable Tank Mates

A species-only setup is best to accommodate the unique breeding biology and short lifespan. If tankmates are used, only very small, peaceful, non-competitive fish of similar water requirements should be considered. Avoid large fish, aggressive fish, fast food-competitive species, fin-nippers, and very small shrimp or fry that may be eaten. A calm, quiet environment is essential for this delicate annual killifish to thrive.

Breeding

This annual killifish lays eggs in peat or fine spawning substrate. Condition a pair or trio with high-quality live foods, then provide spawning media such as peat moss or fine sand. Eggs usually require a drying/incubation period before hatching. Use a pair or trio, provide soft substrate or spawning mops, and collect eggs carefully. Store eggs in slightly damp peat in a sealed container. Fry hatch when the peat is re-flooded and require infusoria or newly hatched brine shrimp. This species is short-lived and benefits from a planned breeding cycle.

Why Buy from Tropical Fish Co

Tropical Fish Co is a trusted UK supplier of rare and specialist tropical fish, including hard-to-find annual killifish species like Nothobranchius kilomberoensis. We guarantee healthy, well-conditioned stock, expert care advice, and secure nationwide delivery. Every fish is quarantined and inspected before dispatch, ensuring you receive only the finest specimens. Whether you're setting up a dedicated killifish tank or adding a rare species to your collection, Tropical Fish Co offers unmatched quality and customer service. Order online today and experience the beauty of Tanzanian annual killifish.