Paracheirodon axelrodi
Cardinal Tetra
Cardinal Tetras are stunning schooling fish where the red stripe runs the full length of the body. They prefer soft, acidic water and look spectacular in heavily planted tanks.
Ensure perfect water for Cardinal Tetra ➔
Perfect for Aquaware Monitoring
🐟
Caution: Highly Sensitive
This species reacts immediately to unstable water parameters. Even minor fluctuations can be critical. Continuous 24/7 monitoring with Aquaware is highly recommended.
Temperature
24 - 29 °C
75 - 84 °F
pH Value
4.5 - 7.0 pH
Acidity Level
Mineral Content (TDS)
10 - 100 ppm
✅ Ideal for Aquaware Sensor
Did you know?
In the wild, they are often annual fish, but in aquariums, they can live for several years.
Aquaware Pro Tip
They are more sensitive to ammonia than Neons; ensure the tank is fully matured.
Natural Habitat
Slow-moving forest streams and tributaries in the Upper Orinoco and Rio Negro rivers.
Diet & Nutrition
Omnivore. Small flakes, granules, and frozen foods like daphnia.
Behavior
Peaceful schooling fish. Needs to be kept in groups.
Max Size
4-5 cm (1.5-2 inches)
Average adult size
Lifespan
4-5 years
Years with proper care
Swim Zone
Preferred tank region
Top
Mid 🐟
Bottom
Min. Tank
60 Liters
Recommended minimum size
Social
10 Fish
Schooling fish (Minimum!)
Add. Space
5 L
Required per additional fish
(1 Gallons)
(1 Gallons)
💧 +5 Liters needed