C
Costello Tetra
Hemigrammus hyanuary
VS
P
Pajama Cardinalfish
Sphaeramia nematoptera
Choosing between Costello Tetra 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.
Costello Tetra
Hemigrammus hyanuaryVS
Pajama Cardinalfish
Sphaeramia nematopteraCommon Name
Costello Tetra
Pajama Cardinalfish
Scientific Name
Hemigrammus hyanuary
Sphaeramia nematoptera
Type
Freshwater
Saltwater / Marine
Difficulty
Beginner Friendly
Beginner Friendly
Temperament
Peaceful
Peaceful
Minimum Tank
10 gallons
20 gallons
Recommended Tank
20 gallons
30 gallons
Temperature
72°F - 79°F
72°F - 78°F
pH Range
5.5 - 7
8.1 - 8.4
Max Size
2 inches
3 inches
Lifespan
3-5 years
5-8 years
Diet
High-quality flake food, Micro pellets, Brine shrimp, Daphnia
Marine pellets, Frozen Mysis shrimp, Frozen brine shrimp, Marine flakes
Costello Tetra
✓ Good For
- Community tanks
- Beginners
- Small tanks
- Schooling displays
Pajama Cardinalfish
✓ Good For
- Community tanks
- Beginners
- Schooling displays
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