B
Black Ghost Knife Fish
Apteronotus albifrons
VS
P
Penguin Tetra
Thayeria boehlkei
Choosing between Black Ghost Knife Fish and Penguin Tetra? 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.
Black Ghost Knife Fish
Apteronotus albifronsVS
Penguin Tetra
Thayeria boehlkeiCommon Name
Black Ghost Knife Fish
Penguin Tetra
Scientific Name
Apteronotus albifrons
Thayeria boehlkei
Type
Freshwater
Freshwater
Difficulty
Advanced
Beginner Friendly
Temperament
Semi-Aggressive
Peaceful
Minimum Tank
75 gallons
15 gallons
Recommended Tank
100 gallons
20 gallons
Temperature
73°F - 80°F
72°F - 82°F
pH Range
6 - 8
6 - 7.5
Max Size
20 inches
3 inches
Lifespan
10-15 years
5-8 years
Diet
Live or frozen bloodworms, Krill, Pellets, Small fish
High-quality flake food, Small pellets, Bloodworms, Brine shrimp
Black Ghost Knife Fish
✓ Good For
Penguin Tetra
✓ Good For
- Community tanks
- Beginners
- Small tanks
- Schooling displays
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