PisciDex Species Profile
Red Eye Tetra
Robust schooling tetra with a red eye mark and silver body, suitable for active community aquariums.
Bario sanctaefilomenae
Acestrorhamphidae | South America | Paraguay, Paraná, and Uruguay basins
Core Requirements
Tank Size
20 gallons minimum
Adult Size
2.8 inches
Group Size
Group 6+
Bioload
1/10
Water Parameters
Temperature
72-79 F
Tolerated Temp
72-82 F
pH
6-8
Plant Safe
Yes
Invert Safe
Yes
Data Confidence
medium
Temperature note: The recommended range is 72-79 F; the broader 72-82 F range is retained as tolerated rather than preferred.
Behavior & Husbandry
Temperament
Peaceful
Aggression
2/10
Diet
Omnivore
Difficulty
Easy
Lifespan
5 years
Breeding
Intermediate
Schooling
Yes
Compatibility Tags
CommunityPeacefulSchoolingMid WaterPlant SafeInvert SafeBeginner Friendly
Similar Species
Species Compatibility
Database-driven compatibility notes for planning community aquariums.