We miss you Cosmo! S.I.P.
I went on vacation for a week but I had someone taking care of my 3 bettas everyday. She has a betta of her own so she knew what she was doing. The third day I was on vacation, she called me and told me cosmo died. I don't know what he died from.... His tank was clean, there was nothing visibly wrong with him when I left. He was thriving when I left. We will sure miss you Cosmo. S.I.P.