Well, he put up a good fight, but tonight I thought it better to euthanize Brutus rather than let him go through any more pain. After treating his tank and performing other various potential remedies, he wasn't getting any better. When I got home tonight I saw how terrible he looked and went to the fish store to get some medicine and advice. They basically told me I shouldn't medicate him because it would disturb the good bacteria in the water. Instead, I bought something to treat the water. When I got back from the store, he was struggling to live. I knew he wouldn't last through the night.
My neighbor, Sean, came over and scooped him out for me. I feel terrible. I'm sure I did something to bring about his demise.