C
Cardinal Tetra
Paracheirodon axelrodi
VS
O
Oscar
Astronotus ocellatus
Choosing between Cardinal Tetra and Oscar? Both are excellent choices, but they have different care requirements and temperaments. Use the detailed comparison below to make an informed decision based on your experience level, tank size, and community goals.
Cardinal Tetra
Paracheirodon axelrodiVS
Oscar
Astronotus ocellatusCommon Name
Cardinal Tetra
Oscar
Scientific Name
Paracheirodon axelrodi
Astronotus ocellatus
Type
Freshwater
Freshwater
Difficulty
Beginner Friendly
Intermediate
Temperament
Peaceful
Aggressive
Minimum Tank
20 gallons
75 gallons
Recommended Tank
30 gallons
125 gallons
Temperature
73°F - 81°F
74°F - 81°F
pH Range
5.5 - 7
6.5 - 7.5
Max Size
2 inches
14 inches
Lifespan
3-5 years
10-20 years
Diet
High-quality flake food, Micro pellets, Frozen or live brine shrimp, Daphnia
Cichlid pellets, Live foods, Frozen foods, Vegetables, Shrimp
Cardinal Tetra
✓ Good For
- Community tanks
- Beginners
- Schooling displays
Oscar
✓ Good For
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