Black ghost knifefish

Photo: Vassil, CC0, via Wikimedia Commons

Apteronotidae

Black ghost knifefish

Apteronotus albifrons

slightly aggressivesolitary

50 cm

Adult size

800 L

Minimum volume

1

Minimum group

15 years

Lifespan

Water parameters

Understand these values
pH6 – 8
49
Hardness (GH)5 – 10°
0°30°
Temperature23 – 28°C
18°C32°C
Genus
Apteronotus
Diet
carnivore
Social life
solitary

In the wild

Overview

This black knifefish with white markings swims in every direction by rippling its long ventral fin. It gives off weak electric discharges and senses its surroundings through electroreceptors spread over its whole body. Often sold at 10 cm, it can grow large.

Scientific name
Apteronotus albifrons (Linnaeus, 1766)
Classification
Gymnotiformes › Apteronotidae
IUCN Red List
Least concern (LC)

Natural habitat

South America, from Venezuela to Paraguay: Orinoco, Amazon and Paraná basins

Observations (GBIF) and localities Native countries Rivers and lakes

It lives in fast-flowing streams and rivers, most often over sand, and moves into flooded forest during the rainy season. It is nocturnal.

Behaviour

Peaceful to the point of shyness, it nonetheless eats small fish as it grows: its companions must exceed about fifteen centimetres (Geophagus, Satanoperca, angelfish, discus). A predator of insects and worms, it needs live or frozen prey. The adult requires a very large aquarium, strong filtration and spotless water.

Sources:FishBase Seriously Fish GBIF · Base map: Natural Earth

Black ghost knifefish · Aquarius