Red-eye tetra

Photo: Cedricguppy - Loury Cédric, CC BY-SA 4.0, via Wikimedia Commons

Characidae

Red-eye tetra

Moenkhausia sanctaefilomenae

slightly aggressiveshoal

7 cm

Adult size

130 L

Minimum volume

8

Minimum group

5 years

Lifespan

Water parameters

Understand these values
pH6 – 8
49
Hardness (GH)3 – 20°
0°30°
Temperature22 – 26°C
18°C32°C
Genus
Moenkhausia
Diet
omnivore
Social life
shoal

In the wild

Overview

The red-eye tetra, with the bright red upper part of its eye and the black-and-white band on its tail, is found in almost every pet shop. All fish in the trade are captive-bred, which makes them undemanding about water and food: an excellent choice for beginners. It is now placed in the genus Bario.

Scientific name
Bario sanctaefilomenae (Steindachner, 1907)Current valid name; in the hobby: Moenkhausia sanctaefilomenae
Classification
Characiformes › Acestrorhamphidae
IUCN Red List
Least concern (LC)

Natural habitat

Paranaíba, São Francisco, upper Paraná, Paraguay and Uruguay basins: Brazil, Paraguay, Argentina, Uruguay

Observations (GBIF) and localities Native countries Rivers and lakes

It lives mainly in the clear-water rivers that feed the Pantanal. Unlike the often murky waters of Amazonia, vegetation grows in abundance there: rafts of floating plants (Eichhornia, Salvinia) and vast beds of Echinodorus.

Behaviour

A good, if slightly boisterous, choice for a community tank: it can intimidate calm species (anabantoids, dwarf cichlids). Keep it with active fish: tetras of similar size, rainbowfish, large Rasbora, barbs, Danio, with Corydoras, small Loricariidae or loaches on the bottom. Keep it in a shoal. It accepts almost anything, with small live or frozen prey and a little plant matter.

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

Red-eye tetra · Aquarius