B
Black Ghost Knife Fish
Apteronotus albifrons
VS
C
Comet Goldfish
Carassius auratus
Choosing between Black Ghost Knife Fish and Comet Goldfish? 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
Comet Goldfish
Carassius auratusCommon Name
Black Ghost Knife Fish
Comet Goldfish
Scientific Name
Apteronotus albifrons
Carassius auratus
Type
Freshwater
Freshwater
Difficulty
Advanced
Beginner Friendly
Temperament
Semi-Aggressive
Peaceful
Minimum Tank
75 gallons
30 gallons
Recommended Tank
100 gallons
55 gallons
Temperature
73°F - 80°F
65°F - 75°F
pH Range
6 - 8
7 - 8.4
Max Size
20 inches
12 inches
Lifespan
10-15 years
10-20 years
Diet
Live or frozen bloodworms, Krill, Pellets, Small fish
Goldfish pellets, Vegetables, Flakes, Frozen foods, Live foods
Black Ghost Knife Fish
✓ Good For
Comet Goldfish
✓ Good For
- Community tanks
- Beginners
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