B
Betta Fish
Betta splendens
VS
P
Pajama Cardinalfish
Sphaeramia nematoptera
Choosing between Betta Fish and Pajama Cardinalfish? 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.
Betta Fish
Betta splendensVS
Pajama Cardinalfish
Sphaeramia nematopteraCommon Name
Betta Fish
Pajama Cardinalfish
Scientific Name
Betta splendens
Sphaeramia nematoptera
Type
Freshwater
Saltwater / Marine
Difficulty
Beginner Friendly
Beginner Friendly
Temperament
Aggressive
Peaceful
Minimum Tank
5 gallons
20 gallons
Recommended Tank
10 gallons
30 gallons
Temperature
76°F - 82°F
72°F - 78°F
pH Range
6.5 - 7.5
8.1 - 8.4
Max Size
3 inches
3 inches
Lifespan
2-5 years
5-8 years
Diet
Pellets, Flakes, Freeze-dried foods, Live foods (occasionally)
Marine pellets, Frozen Mysis shrimp, Frozen brine shrimp, Marine flakes
Betta Fish
✓ Good For
- Beginners
- Small tanks
Pajama Cardinalfish
✓ Good For
- Community tanks
- Beginners
- Schooling displays
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