Petco Text Logo
Petco Pet Logo

How many guppies can I put in my 200-liter tank for breeding?

Updated On September 23rd, 2025

Pet's info: Fish | Freshwater Fish | Female | unspayed

Hey so I currently have a spear 200 litre tank since I moved my Goldfish to a 500 litre tank. I used to breed guppies and I want to do it again, so I was thinking of filling my 200 litre tank with guppies my question is how many guppies will fit in the 200 litre tank, thx

1 Answer

Most Helpful Answer

Image profile

Answered By Todd Cecil

Veterinarian

Published on January 8th, 2020

Thanks for reaching out. The general rule of thumb with good filtration is to have 1 " fish per 12 liters (3 gallons) of water. So starting with 10-15 should be good, but remember babies increase the bioload significantly, so continue to monitor water quality and allow your biological filter time to respond. 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