B
Black Ghost Knife Fish
Apteronotus albifrons
VS
B
Blue-Green Chromis
Chromis viridis
Choosing between Black Ghost Knife Fish and Blue-Green Chromis? 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
Blue-Green Chromis
Chromis viridisCommon Name
Black Ghost Knife Fish
Blue-Green Chromis
Scientific Name
Apteronotus albifrons
Chromis viridis
Type
Freshwater
Saltwater / Marine
Difficulty
Advanced
Intermediate
Temperament
Semi-Aggressive
Peaceful
Minimum Tank
75 gallons
30 gallons
Recommended Tank
100 gallons
55 gallons
Temperature
73°F - 80°F
75°F - 82°F
pH Range
6 - 8
8.1 - 8.4
Max Size
20 inches
4 inches
Lifespan
10-15 years
8-15 years
Diet
Live or frozen bloodworms, Krill, Pellets, Small fish
Marine flakes, Marine pellets, Frozen foods, Brine shrimp, Mysis shrimp, Copepods
Black Ghost Knife Fish
✓ Good For
Blue-Green Chromis
✓ Good For
- Community tanks
- Schooling displays
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