Stelifer Spot-Finned Killie (Llanolebias stellifer) — 3-4cm

Overview

Stelifer Spot-Finned Killie (Llanolebias stellifer) is a rare and beautifully patterned annual killifish endemic to the Llanos of the Orinoco basin in Venezuela. Inhabiting shallow temporary forest waters and seasonal ponds, this species has evolved a fascinating breeding biology and a short, intense lifespan adapted to the boom-and-bust cycle of ephemeral habitats. Now available for sale UK from Tropical Fish Co, this expert-level killifish rewards dedicated keepers with unique behavior, stunning coloration, and the challenge of successfully breeding an annual species.

Appearance

The Stelifer Spot-Finned Killie typically reaches around 3.5 cm in total length, making it one of the smaller annual killifish. Males are strikingly patterned, displaying a mosaic of iridescent blue, red, and gold spots and bars across their flanks and fins. The fins are often elongated and decorated with intricate markings that intensify during spawning displays. Females are smaller and more subdued in color, usually showing a pale olive or tan background with minimal patterning. Healthy specimens have bright, clear eyes and smooth, undamaged scales.

Natural Habitat

In the wild, Llanolebias stellifer is endemic to the Llanos, a vast floodplain region of the Orinoco basin in Venezuela. During the rainy season, these areas flood extensively, creating shallow temporary pools and forest waters teeming with aquatic life. As the dry season progresses, water levels drop and many of these habitats dry out completely. The fish have adapted by laying drought-resistant eggs in the substrate, which enter a period of dormancy and hatch rapidly when the rains return. The water is typically soft, warm, and rich in organic matter, with dense aquatic vegetation providing cover.

Aquarium Setup

A small, species-only aquarium of at least 25 litres is recommended for the Stelifer Spot-Finned Killie. Use a fine, dark substrate and incorporate plenty of live plants such as Java moss, Cabomba, or floating plants to provide cover and subdued lighting. Add driftwood or dried leaves to replicate the tannin-stained waters of their natural habitat, and ensure filtration is gentle but effective. A tightly fitting lid is essential, as killifish are exceptional jumpers. Maintain excellent water quality and avoid strong currents, as this species prefers calm, heavily planted environments.

Feeding

The Stelifer Spot-Finned Killie is a carnivore and requires a varied, protein-rich diet to thrive. Offer small live and frozen foods such as daphnia, brine shrimp, mosquito larvae, grindal worms, and other tiny meaty foods daily. Quality micro-pellets or prepared foods may be accepted, but live and frozen foods should form the bulk of the diet to maintain health and breeding condition. Feed twice daily in small amounts to avoid overfeeding and maintain pristine water quality.

Behaviour

This annual killifish is peaceful and active, exploring all levels of the aquarium with curiosity and energy. Males may engage in territorial displays during spawning, fanning fins and showing off to rivals or potential mates, but serious aggression is rare. Due to their short natural lifespan (typically less than one year in the wild), these fish exhibit rapid growth and accelerated breeding behavior. A small group with more females than males is ideal to spread out any territorial behavior and encourage natural spawning.

Tank Mates

The Stelifer Spot-Finned Killie is best kept in a species-only aquarium, where its specialized care requirements and unique breeding biology can be fully appreciated. Due to its small size, peaceful temperament, and short lifespan, it is not suitable for community tanks. Avoid any large, aggressive, or fast-moving fish, as well as fin-nippers and active bottom-dwellers that may disturb the substrate or eggs.

Breeding

Breeding the Stelifer Spot-Finned Killie is a rewarding challenge for expert keepers. This annual species spawns in soft substrate or peat, and eggs undergo a period of dormancy (diapause) before hatching. Provide soft, clean water, heavy conditioning with live foods, and a fine spawning medium such as peat moss. Eggs should be collected and incubated in moist medium for several weeks to months, maintaining the correct temperature and humidity throughout. When ready, rehydrate the eggs to trigger hatching. Fry are tiny and require infusoria or liquid fry food initially, graduating to baby brine shrimp as they grow.

Why Buy from Tropical Fish Co

Tropical Fish Co is a leading UK aquatics specialist offering rare and specialist killifish species like the Stelifer Spot-Finned Killie direct to your door. Every fish is carefully quarantined, health-checked, and packed with expert care to ensure safe arrival. With transparent pricing, fast UK delivery, and a knowledgeable support team on hand to answer your questions, we make it easy to add challenging and fascinating species to your collection. Whether you're an experienced annual killifish breeder or an enthusiast looking to expand your knowledge, we're here to support you every step of the way. Order online today and discover why discerning UK aquarists choose Tropical Fish Co for quality and service.