Cardinal Tetra
Paracheirodon axelrodi
Advanced
Freshwater
Peaceful and schooling (keep in groups of 6+). Shy, prefers slow, shaded water. Diurnal.
Characidae
Max Size
5.0 cm (2")
Min Tank
40 L (11 gal)
Min Group
6+
Diet
Omnivore - balanced diet
Water Parameters
Temperature
24.0-29.0°C
75-84°F
pH
4.0-6.5
Hardness (dGH)
1.0-2.0
Min Tank Size
40 L
11 gal
About
Widely marketed in the aquarium trade. Important to the local economy in the Amazon.
Behavior & Temperament
Peaceful and schooling (keep in groups of 6+). Shy, prefers slow, shaded water. Diurnal.
Feeding
Omnivore - balanced diet
Breeding
Oviparous. Spawns in open water. Eggs are light‑sensitive. Captive breeding is considered very difficult.
Care Notes
Sensitive to parameter fluctuations. Sensitive to ammonia. Needs hiding spots. Prefers dark substrate
Compatibility
Good for community tanks
Quick Summary
| Scientific Name | Paracheirodon axelrodi |
|---|---|
| Family | Characidae |
| Category | Fish |
| Care Level | Advanced |
| Water Type | Freshwater |
| Max Size | 5.0 cm (2") |
| Min Tank | 40 L (11 gal) |
| Min Group | 6+ |
| Diet | Omnivore - balanced diet |
| Temperament | Peaceful and schooling (keep in groups of 6+). Shy, prefers slow, shaded water. Diurnal. |
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