I have never owned a betta fish before, but before I went off to college, I decided to purchase a betta to keep me company! I have had my male betta for over four months, and he has been doing extremely well until recently.
About two weeks ago, he started sitting at the top of his tank, underneath his filter. I thought maybe my filter was too strong, but after fixing it, he would still sit underneath it. A few days later, he stopped eating all together. I did a full water change, and decided to fast him for a week.
It's now been over 9 days, and he still refuses to eat. He still sits at the top corner of his tank, and will not move much. I'm at a loss! Nothing changed in his tank environment, and he was pooping and eating fine until a few weeks ago. Otherwise, he looks perfectly healthy.
I feel bad because I know very little about betta care, but I hoped that the experienced members of this site would be able to help me out so I could save my little guy.