Hello I really need some help figuring out what is going on with my stingray before it is to late. 5 days ago I did my regular once a week 50% wc. After the water change he did not eat. I was not to concerned until the next morning when I noticed to me looked like he was losing his slime coat, and still not eating. I tested my water and everything came back normal. So I gave him another day to get better. Still had no luck and a very long clear string of slime was hanging off him and it had a red ting to it, the slimey string I assume was coming out of his anus. So I pulled the sting off the next day as it did not fall off on its own. Started doing 10% water change once a day and raised my temp to 82F. I came home today and noticed a green sting coming out from under him I took a pic this time. PLEASE HELP!!!