just sort of around his little bottom fin and top fin it looks like it. could something in the water be too strong for him ? hes looking a little ratty. what could be wrong ? but on his top fin at the front he has like white mark/line. my dad had a look and told me its probably white spot (he had tropical fish for many years in a huge tank, so is fairly educated on fish)
what could it be ? will he die ?
what could it be ? will he die ?