Description
How big do tetra fish get? Tetras can reach an adult size of 1.5 inch depending on the species. How many tetra fish can live together per gallon of aquarium
Requirements. If you'd like to keep a group of cardinal tetras, it's a good idea to go for an aquarium of at least 20 gallons (long, not high; as we've discussed, they prefer shallow water anyway). This should offer plenty of swimming room.
| Synonyms | Cheirodon axelrodi, Hyphessobrycon cardinalis |
|---|---|
| Distribution | South America: Upper Orinoco and Negro River Basins. |
| Maximum Size | 3.5cm (1.4") |
| Temperature | 23-27°C |
| Water Parameters | Tank bred specimens are adaptable but fare best in soft and acidic water. pH: 4.0-7.0, dH: 5-12 degrees. |