B
Black Ghost Knife Fish
Apteronotus albifrons
VS
O
Oscar
Astronotus ocellatus
Choosing between Black Ghost Knife Fish and Oscar? 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
Oscar
Astronotus ocellatusCommon Name
Black Ghost Knife Fish
Oscar
Scientific Name
Apteronotus albifrons
Astronotus ocellatus
Type
Freshwater
Freshwater
Difficulty
Advanced
Intermediate
Temperament
Semi-Aggressive
Aggressive
Minimum Tank
75 gallons
75 gallons
Recommended Tank
100 gallons
125 gallons
Temperature
73°F - 80°F
74°F - 81°F
pH Range
6 - 8
6.5 - 7.5
Max Size
20 inches
14 inches
Lifespan
10-15 years
10-20 years
Diet
Live or frozen bloodworms, Krill, Pellets, Small fish
Cichlid pellets, Live foods, Frozen foods, Vegetables, Shrimp
Black Ghost Knife Fish
✓ Good For
Oscar
✓ Good For
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