P
Pajama Cardinalfish
Sphaeramia nematoptera
VS
S
Severum
Heros severus
Choosing between Pajama Cardinalfish and Severum? 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
Severum
Heros severusCommon Name
Pajama Cardinalfish
Severum
Scientific Name
Sphaeramia nematoptera
Heros severus
Type
Saltwater / Marine
Freshwater
Difficulty
Beginner Friendly
Intermediate
Temperament
Peaceful
Semi-Aggressive
Minimum Tank
20 gallons
55 gallons
Recommended Tank
30 gallons
75 gallons
Temperature
72°F - 78°F
74°F - 84°F
pH Range
8.1 - 8.4
6 - 7.5
Max Size
3 inches
12 inches
Lifespan
5-8 years
10-15 years
Diet
Marine pellets, Frozen Mysis shrimp, Frozen brine shrimp, Marine flakes
Cichlid pellets, Vegetables, Frozen foods, Spirulina, Algae wafers
Pajama Cardinalfish
✓ Good For
- Community tanks
- Beginners
- Schooling displays
Severum
✓ Good For
- Community tanks
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