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What's the best tank size and setup for a happy, healthy betta?

Updated On September 23rd, 2025

Pet's info: Fish | Unknown - Fish | Male | unneutered | 1 month old

Hello! I just got a betta fish yesterday, and i wanted to make sure he is happy in his tank. He is in a 2.5 gallon tank, with a filter, (no heater) with two snails (1 nerite snail and one assassin) how big should the tank be, and what do i need for him to live long? Thanks!

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1 Answer

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Answered By Angel Alvarado, LVT

Licensed Veterinary Technician

Published on September 21st, 2018

A 2.5 gallon tank is fine for a Betta and 2 snails. If you have artificial plants, use ones made of silk instead of plastic which can harm delicate fins. You'll need a heater also. Bettas are tropical fish and do best between 78 F and 80 F.

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