M
Molly
Poecilia sphenops
VS
T
Threadfin Rainbowfish
Iriatherina werneri
Choosing between Molly and Threadfin Rainbowfish? 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.
Molly
Poecilia sphenopsVS
Threadfin Rainbowfish
Iriatherina werneriCommon Name
Molly
Threadfin Rainbowfish
Scientific Name
Poecilia sphenops
Iriatherina werneri
Type
Freshwater
Freshwater
Difficulty
Beginner Friendly
Intermediate
Temperament
Peaceful
Peaceful
Minimum Tank
20 gallons
10 gallons
Recommended Tank
30 gallons
20 gallons
Temperature
75°F - 82°F
75°F - 82°F
pH Range
7.5 - 8.5
6 - 7.5
Max Size
4.5 inches
2 inches
Lifespan
3-5 years
3-5 years
Diet
High-quality vegetable-based flake food, Algae wafers, Spirulina, Blanched vegetables, Frozen daphnia, Bloodworms
Small pellets, Frozen foods, Brine shrimp, Daphnia
Molly
✓ Good For
- Community tanks
- Beginners
Threadfin Rainbowfish
✓ Good For
- Community tanks
- Small tanks
- Schooling displays
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