Best betta fish tank: Fluval Flex Aquarium Kit - See at Amazon The sleek, modern Fluval Flex Freshwater Kit has 15 gallons of betta swimming space and LED lights to highlight your stunner in ...

Answer by Kirk Janowiak, wildlife biologist, fish-fancier for more than 50 years: Your fish has some cool adaptations that allow it to know when you put food into the aquarium.

Be sure that your schedule allows for the work required to maintain your aquarium. What to look for in a quality betta fish tank Heater Bettas are healthiest in warm water between 74 and 80 degrees F.

1. Betta Fish: Betta fish are stunning, vibrant, and easy to care for. They thrive in small tanks and don’t require aeration. Males should be kept alone, while females can live in groups. 2.