G
Guppy
Poecilia reticulata
VS
P
Pajama Cardinalfish
Sphaeramia nematoptera
Choosing between Guppy 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.
Guppy
Poecilia reticulataVS
Pajama Cardinalfish
Sphaeramia nematopteraCommon Name
Guppy
Pajama Cardinalfish
Scientific Name
Poecilia reticulata
Sphaeramia nematoptera
Type
Freshwater
Saltwater / Marine
Difficulty
Beginner Friendly
Beginner Friendly
Temperament
Peaceful
Peaceful
Minimum Tank
5 gallons
20 gallons
Recommended Tank
10 gallons
30 gallons
Temperature
72°F - 82°F
72°F - 78°F
pH Range
6.8 - 7.8
8.1 - 8.4
Max Size
2.5 inches
3 inches
Lifespan
1-3 years
5-8 years
Diet
Flakes, Pellets, Frozen foods, Vegetables
Marine pellets, Frozen Mysis shrimp, Frozen brine shrimp, Marine flakes
Guppy
✓ Good For
- Community tanks
- Beginners
- Small tanks
Pajama Cardinalfish
✓ Good For
- Community tanks
- Beginners
- Schooling displays
Explore More
Similar Comparisons
Discover other popular fish pairings to find your perfect aquarium match.