Species description

Care, breeding and tankmates

Fish profile

Temperament

Territorial

They are generally peaceful and active, constantly moving around the aquarium. Male sparring is frequent but usually harmless, consisting mostly of lateral displays. They are confident fish when kept in a proper school.

Diet

Omnivore

They are omnivorous micro-predators that accept a wide variety of small foods. High-quality crushed flakes, micro-pellets, and live or frozen daphnia are consumed. Providing a varied diet enhances the vibrant red and gold coloration.

Sex ratio

Specific M:F ratio

Keeping a ratio of two or three females per male helps disperse aggression. Males will constantly spar and display for dominance in the tank. Having more females ensures that no single fish is overly harassed.

Feeding frequency

Twice daily

Feeding them one to two times a day with small portions is sufficient. They feed aggressively but have small mouths, requiring appropriately sized food. Ensure they get enough food before faster tank mates consume it.

Bioload

Low

The Golden Pencilfish produces a very low bioload ideal for community aquariums. Their small size and efficient digestion mean they contribute minimally to water pollution. A standard, well-maintained filter will easily keep their environment pristine.

Flow

Moderate

They prefer moderate water flow that mimics their natural riverine habitats. Some surface agitation is appreciated, provided there are calm resting areas. Overly turbulent water should be avoided to prevent physical exhaustion.

Jump risk

Yes

Like many pencilfish, they are prone to jumping when frightened. A secure aquarium lid is highly recommended to prevent accidental losses. Floating plants can also help deter them from breaking the surface.

Reproduction

Oviparous

They are relatively easy to breed, scattering eggs among fine-leaved plants. The parents exhibit no parental care and will actively hunt their own eggs. A dedicated breeding tank with egg-catching mesh is required for survival.

Compatibility & tankmates

Community

They are peaceful community fish that mix well with tetras and corydoras. They should not be kept with large or aggressive species as tank mates. They do best when kept in schools of at least six individuals.

Tank level

Top/Middle

They are active in the upper and middle areas of the tank. They often hover at a slight angle, picking at microscopic food. They rarely feed from the bottom substrate during normal activity.