P
Pajama Cardinalfish
Sphaeramia nematoptera
VS
R
Rope Fish
Erpetoichthys calabaricus
Choosing between Pajama Cardinalfish and Rope Fish? 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
Rope Fish
Erpetoichthys calabaricusCommon Name
Pajama Cardinalfish
Rope Fish
Scientific Name
Sphaeramia nematoptera
Erpetoichthys calabaricus
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
72°F - 82°F
pH Range
8.1 - 8.4
6.5 - 7.5
Max Size
3 inches
16 inches
Lifespan
5-8 years
15-20 years
Diet
Marine pellets, Frozen Mysis shrimp, Frozen brine shrimp, Marine flakes
Live or frozen fish, Bloodworms, Shrimp, Pellets
Pajama Cardinalfish
✓ Good For
- Community tanks
- Beginners
- Schooling displays
Rope Fish
✓ Good For
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