Betta Fish – Blue or Red Siamese Fighting Fish
Scientific Name: Betta splendens
Common Name: Siamese Fighting Fish
Adult Size: 2.5 inches
Life Expectancy: 2 – 3 years, possibly longer
Habitat: Thailand
Minimum Tank Size: As small as 2 gallons but they do best in larger tanks.
Ideal Tank Conditions
- Temperature Range: 75 – 80°F
- pH Range: 6.0 – 7.5
- Water Hardness: 5 – 20
Temperament: Peaceful if given the right tank mates. They will become aggressive with other Bettas. They may also become aggressive towards other tropical fish.
FAQ
What is the ideal water temperature for Betta fish?
The ideal water temperature for Betta fish is between 75 and 80°F.
Can Betta fish live in a small tank?
Bettas can survive in as small as a 2-gallon tank, but they thrive best in larger tanks.
Are Betta fish aggressive with other fish?
Bettas can become aggressive with other Bettas and may also show aggression toward other tropical fish, especially if not properly housed.


Chloe Harris –
The blue betta is very vibrant and active. I kept it in a 5-gallon tank with a few peaceful shrimp. It stayed calm and showed off its colors well. Easy to care for and looks stunning in the tank.
Dorothy Jackson –
My red betta has been in the tank for three months and is still healthy. I maintain the temperature and water conditions as recommended. It doesn’t fight with other fish, but I avoid keeping other bettas.
Stewart Churchill –
Beautiful fish with bright colors. The tank setup is simple and the instructions were clear. I keep it in a 10-gallon tank with floating plants and it seems happy and active.