I am looking for help in identifying where I am going wrong in my Betta Fish care. I have gone through two Betta Fish over three weeks. Setup is pictured below, in a 1-gallon tank, with a water conditioner, tap water, filter, light, and the Betta food pellets. My daughter and I give the fish 3 pellets in the morning and three at night. That is a live plant in the tank, that is Betta friendly.

I've heard the lifespans for Betta Fish are supposed to be much longer than this, so I turn to the community to find out where I am going wrong with my care.

[![enter image description here](https://i.stack.imgur.com/jPZ8H.jpg)](https://i.stack.imgur.com/jPZ8H.jpg)