B
Blue Tang
Paracanthurus hepatus
VS
M
Molly
Poecilia sphenops
Choosing between Blue Tang and Molly? 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.
Blue Tang
Paracanthurus hepatusVS
Molly
Poecilia sphenopsCommon Name
Blue Tang
Molly
Scientific Name
Paracanthurus hepatus
Poecilia sphenops
Type
Saltwater / Marine
Freshwater
Difficulty
Advanced
Beginner Friendly
Temperament
Semi-Aggressive
Peaceful
Minimum Tank
125 gallons
20 gallons
Recommended Tank
180 gallons
30 gallons
Temperature
72°F - 78°F
75°F - 82°F
pH Range
8.1 - 8.4
7.5 - 8.5
Max Size
12 inches
4.5 inches
Lifespan
8-12 years
3-5 years
Diet
Marine algae, Nori, Marine pellets, Frozen foods, Spirulina
High-quality vegetable-based flake food, Algae wafers, Spirulina, Blanched vegetables, Frozen daphnia, Bloodworms
Blue Tang
✓ Good For
- Community tanks
Molly
✓ Good For
- Community tanks
- Beginners
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