Petco Text Logo
Petco Pet Logo

What saltwater fish can I safely keep in a 10 gallon tank?

Updated On September 23rd, 2025

Pet's info: Fish | Betta | Female | 1.5 lbs

What type of saltwater fish can I have in a 10 gallon tank

1 Answer

Most Helpful Answer

Image profile

Answered By Todd Cecil

Veterinarian

Published on November 3rd, 2019

Thanks for reaching out, the rule of thumb is 1" of fish per 3 gallons, but smaller tanks are very difficult to keep stable, and saltwater fish are easily stressed by environmental fluctuations (salinity, temperature, dissolved oxygen). Good luck.

Vote icon

1Pet Parents found this answer helpful

image
Have A Vet Question?

Book an appointment with the pros – our expert vets are here to help.

Sponsored