Petco Text Logo
Petco Pet Logo

Betta fish tank has tiny white worms. How do I get rid of them?

Updated On September 23rd, 2025

Pet's info: Fish | Unknown - Fish

I have a betta fish. And recently noticed that there are tiny bugs living in the water. Some are the size of a grain of sand and some look like tiny white worms. What are they and how do I get rid of them?

1 Answer

Most Helpful Answer

Image profile

Answered By Dr Stafford, BVetMed, MRCVS

Veterinarian

Published on August 26th, 2017

It is not uncommon to get external parasites living in aquariums. For example anchor worms are really common and will bury into the fish leaving a white trail hanging out. I would suggest changing 70% water to reduce parasite and eggs, clean your filter and then treat the water with bettafix or bettazing which helps to kill parasites. Be careful you arent overfeedibg as this can encourage parasites.

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