P
Pajama Cardinalfish
Sphaeramia nematoptera
VS
T
Threadfin Rainbowfish
Iriatherina werneri
Choosing between Pajama Cardinalfish and Threadfin Rainbowfish? 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.
Pajama Cardinalfish
Sphaeramia nematopteraVS
Threadfin Rainbowfish
Iriatherina werneriCommon Name
Pajama Cardinalfish
Threadfin Rainbowfish
Scientific Name
Sphaeramia nematoptera
Iriatherina werneri
Type
Saltwater / Marine
Freshwater
Difficulty
Beginner Friendly
Intermediate
Temperament
Peaceful
Peaceful
Minimum Tank
20 gallons
10 gallons
Recommended Tank
30 gallons
20 gallons
Temperature
72°F - 78°F
75°F - 82°F
pH Range
8.1 - 8.4
6 - 7.5
Max Size
3 inches
2 inches
Lifespan
5-8 years
3-5 years
Diet
Marine pellets, Frozen Mysis shrimp, Frozen brine shrimp, Marine flakes
Small pellets, Frozen foods, Brine shrimp, Daphnia
Pajama Cardinalfish
✓ Good For
- Community tanks
- Beginners
- Schooling displays
Threadfin Rainbowfish
✓ Good For
- Community tanks
- Small tanks
- Schooling displays
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