Last night I had to euthanize my betta boy Draco. He had developed what I found out was a tumor on his side and couldn't recover. He had stopped eating or swimming and had taken to curling up in his cave.
Last night I found him laying at the bottom of his tank on his side hardly able to breath. I just couldn't let him go on like that, especially knowing that he couldn't get better.
Rest in peace my little betta boy. You were a great fish and I will miss you.