Red Alestopetersius

Alestopetersius nigropterus

Photo of aquarium fish Red Alestopetersius
Natural range
  • Kinshasa area
  • Democratic Republic of the Congo
Characins Conservation status: Endangered EN

Family:African Tetras (Alestidae)

Other scientific names: Hemigrammopetersius nigropterus

The Red Alestopetersius, also known by the scientific designations Alestopetersius nigropterus or Alestopetersius ansorgii, belongs to the African tetra family (Alestidae). To date, this species has not yet received a definitive scientific classification, which explains the existence of multiple names for the same fish. Nevertheless, this does not hinder its active export and wide distribution in trade. These fish are relatively easy to care for, do not require a large aquarium environment, and get along well with other inhabitants.

Required aquarium volume
from 100 L
Size in aquarium
5 – 6 cm
Temperature
22 – 26 °C
Temperament
Peaceful (regular)
Parameters
Temperature22 – 26 °C
Water pHSlightly acidic (5) – Neutral (7)
Water dHVery soft (1) – Medium hardness (10)
Water salinityno salt (freshwater)
Size in aquarium5 – 6 cm
Lifespan5 years
TemperamentPeaceful (regular)
Toward small fishnot a predator
Required aquarium volumefrom 100 L
Lightingdimmed or moderate
Substrateany (no restrictions)
Water flowmoderate
Swimming levelmiddle level
FeedingAny (universal)
KeepingGroup (8–10 individuals)
Jumpinglow

Frequently asked questions

The essentials: size, tank volume, water parameters and care

How big does Red Alestopetersius get?

An adult reaches 5–6 cm in length. Plan the tank around the maximum size: the fish quickly outgrows a cramped setup.

What size aquarium does Red Alestopetersius need?

The recommended volume is 100 L. A smaller tank speeds up nitrate build-up and raises stress levels.

What water parameters does Red Alestopetersius need?

Temperature 22–26 °C, pH 5–7, hardness 1–10 dGH. Stability matters more than exact values: sudden swings are harder on the fish than a small deviation from the ideal.

How long does Red Alestopetersius live?

Around 5 years when kept properly. Lifespan depends directly on tank volume, water quality and a varied diet.

Is Red Alestopetersius aggressive?

Temperament: peaceful (regular). Keep this in mind when choosing tank mates.

How many Red Alestopetersius should be kept together?

Recommended setup: group (8–10 individuals). Ignoring this is a common cause of stress and disease.

What does Red Alestopetersius eat?

Diet type: any (universal). Feed small portions that are finished within a couple of minutes — overfeeding does more harm than underfeeding.

What is the scientific name of Red Alestopetersius?

The scientific name of the species is Alestopetersius nigropterus, family African Tetras (Alestidae). It also appears in the literature as: Hemigrammopetersius nigropterus.

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