Home · Lebiasinidae · Anomalous pencilfish
Anomalous pencilfish (Nannostomus beckfordi) — Lebiasinidae

Anomalous pencilfish

Nannostomus beckfordi
Family: Lebiasinidae
LC · Least Concern

The Anomalous pencilfish (Nannostomus beckfordi) is a freshwater fish of the family Lebiasinidae that grows up to 7 cm.

Length
6.5 cm
Water
Freshwater
Diet
Omnivore
Behaviour
Small groups
Activity
Diurnal
Body shape
Elongated (eel-like)
Substrate
Mixed bottom
Danger
Harmless
Edibility
Not eaten

Description

The golden pencilfish is a small characin of the family Lebiasinidae from northern South America. The species reaches only about 6.5 cm and has a thin, pencil-shaped body with a shining golden to brownish flank and a dark lengthwise stripe. It inhabits small, slow-flowing rivers and swamps, where it lives in groups. Males defend small territories and are more brightly coloured than females. As an omnivore it searches for small invertebrates and plant matter in the upper water layers. The species is very popular with aquarists and harmless to humans.

Frequently asked questions

How do you recognise the Anomalous pencilfish?

The Anomalous pencilfish has an elongate, eel-like body, is mainly yellow-gold and shows a horizontal stripes pattern.

Where does the Anomalous pencilfish live?

The Anomalous pencilfish lives in fresh water and is mostly found around mixed bottom.

How big does the Anomalous pencilfish get?

The Anomalous pencilfish grows to a maximum of about 7 cm.

Is the Anomalous pencilfish dangerous to humans?

No, the Anomalous pencilfish is harmless to humans.

Is the Anomalous pencilfish edible?

The Anomalous pencilfish is not usually eaten.

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All data

Identification

Dutch name
Goudpenvis sourced
English name
Anomalous pencilfish verified
Scientific name
Nannostomus beckfordi
Family
Lebiasinidae
Other names
Aripiranga pencilfish; Beckford's Pencil Fish; Brown pencilfish; Golden pencilfish verified

Appearance

Size class
Small verified
Max length (cm)
6.5 verified
Body shape
Elongated (eel-like) sourced
Dominant colour
Yellow / gold inferred
Pattern
Horizontal stripes inferred
Tail shape
Forked inferred
Mouth position
Superior (upward) inferred
Lips
Thin inferred
Barbels
No sourced
Dorsal fins
One continuous inferred
Dorsal spines
No sourced

Habitat & distribution

Water type
Freshwater sourced
Substrate
Mixed bottom sourced
Origin
Native sourced

Behaviour & biology

Diet
Omnivore sourced
Social behaviour
Small groups inferred
Territorial
Yes inferred
Activity
Diurnal inferred
Reproduction
Separate sexes sourced
Sexual dimorphism
Yes inferred

For anglers

Edibility
Not eaten sourced
Fishing method
Geen doelsoort voor de hengelsport; hooguit incidentele vangst of bruikbaar als aasvisje. inferred
Regulations source
FishBase ↗ inferred

Safety

Danger to humans
Harmless sourced

Status & sources

Sources
FishBase via GBIF (DwC-A), CC-BY-NC 4.0

Same genus Nannostomus

More from the family Lebiasinidae

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