How many gallon fish tank should you get for your 3 fish?

The appropriate size of a fish tank for three fish depends on the species of fish, their adult sizes, and activity levels. Here are some guidelines to help you choose a suitable tank size for your fish:

1. Guppies and Tetras: These small fish can comfortably live in a 10-gallon tank or larger.

2. Platies and Mollies: These slightly larger fish may need a 20-gallon tank or larger.

3. Danios and Rasboras: These active species prefer a tank of 20 gallons or more.

4. Bettas: While bettas can survive in small containers, they thrive in a 5-gallon tank or larger, especially if you plan to add tankmates.

5. Goldfish: Goldfish require a lot of space as adults. Depending on the type of goldfish, you may need a tank of 20 gallons or more, with extra space for each additional goldfish.

6. Larger Species (e.g., Angelfish, Discus): These fish may need a tank of 30 gallons or more, considering their adult size and territorial behaviors.

Always research the specific requirements of your fish species to determine the appropriate tank size. Overcrowding can lead to poor water quality, stress, and health issues for your fish. It is better to provide them with a spacious environment to thrive and display their natural behaviors.

Additionally, keep in mind that as your fish grow, you may need to upgrade to a larger tank to accommodate their size and well-being.