B
Black Ghost Knife Fish
Apteronotus albifrons
VS
O
Opaline Gourami
Trichogaster trichopterus (Opaline variant)
Choosing between Black Ghost Knife Fish and Opaline Gourami? 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
Opaline Gourami
Trichogaster trichopterus (Opaline variant)Common Name
Black Ghost Knife Fish
Opaline Gourami
Scientific Name
Apteronotus albifrons
Trichogaster trichopterus (Opaline variant)
Type
Freshwater
Freshwater
Difficulty
Advanced
Beginner Friendly
Temperament
Semi-Aggressive
Semi-Aggressive
Minimum Tank
75 gallons
30 gallons
Recommended Tank
100 gallons
40 gallons
Temperature
73°F - 80°F
72°F - 82°F
pH Range
6 - 8
6 - 8
Max Size
20 inches
6 inches
Lifespan
10-15 years
4-6 years
Diet
Live or frozen bloodworms, Krill, Pellets, Small fish
Flakes, Pellets, Frozen foods, Vegetables
Black Ghost Knife Fish
✓ Good For
Opaline Gourami
✓ Good For
- Community tanks
- Beginners
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