Is 2 gallons OK for a betta?
Is 2 gallons OK for a betta? In a tank smaller than 5 gallons, your betta won’t live out his full life span. In an aquarium, a betta should live for 3 to 5 years. In a cramped 2.5-gallon tank, your betta won’t live as long. Yes, you read that right – a tank that is too small can lead to an early death.