Tropical Fish Site

Profiles Reviews Guides for Tropical and Marine

Red Eye Tetra – Moenkhausia Sanctaefilomenae


Common name: Red Eye Tetra

Scientific name: Moenkhausia Sanctaefilomenae

Average Adult Fish Size:  2.8 inches  /  7 cm

Place of Origin: Brazil, Paraguay and Argentina.

Typical Tank setup: Well planted with rocks and driftwood/bogwood. Being a very active species it is advisable to create some strong currents in the tank to ensure they remain active.

Recommended Minimum Aquarium Capacity: 25 gallon / 100 litre

Compatibility: It is very common to find tetras with Corydoras as companions, as they are both quite peaceful and other tank mates like Guppies, other Tetras, Rasboras, Mollies & Platies

Temperature: 72 – 79 Deg F / 22 – 26 Deg C

Water chemistry: pH 6.0 – 8.0

Feeding: The Red Eye Tetra will accept almost anything put in the tank so a stable diet of normal tropical flakes is the best place to start.

Sexing: The female Red Eye Tetra is a rounder bodied fish when in breeding condition.

Breeding: Dimly lit tank with some fine leaved plants on the bottom to catch the eggs will encourage breeding. Be sure to remove parents after they have spawned to avoid them eating the eggs.

Additional Information: Due to its popularity, it’s commercially bred in huge numbers for the trade. Most of the ones on sale in the UK originate from Eastern Europe.