B
Betta Fish
Betta splendens
VS
T
Threadfin Rainbowfish
Iriatherina werneri
Choosing between Betta Fish 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.
Betta Fish
Betta splendensVS
Threadfin Rainbowfish
Iriatherina werneriCommon Name
Betta Fish
Threadfin Rainbowfish
Scientific Name
Betta splendens
Iriatherina werneri
Type
Freshwater
Freshwater
Difficulty
Beginner Friendly
Intermediate
Temperament
Aggressive
Peaceful
Minimum Tank
5 gallons
10 gallons
Recommended Tank
10 gallons
20 gallons
Temperature
76°F - 82°F
75°F - 82°F
pH Range
6.5 - 7.5
6 - 7.5
Max Size
3 inches
2 inches
Lifespan
2-5 years
3-5 years
Diet
Pellets, Flakes, Freeze-dried foods, Live foods (occasionally)
Small pellets, Frozen foods, Brine shrimp, Daphnia
Betta Fish
✓ Good For
- Beginners
- Small tanks
Threadfin Rainbowfish
✓ Good For
- Community tanks
- Small tanks
- Schooling displays
Explore More
Similar Comparisons
Discover other popular fish pairings to find your perfect aquarium match.