euthanize

Hi all, First post so if I break some rules here, I apologize for that. However I have been keeping fish for several years and like to think I'm not completely stupid. Anyways- I have a female Red festae (terror) that I have quarantined into a 15 gallon hospital tank for a duck lips...

I have an old pug... My parents say he's 10 but I feel as though they've said that past few years so I would guess 12-13. Anyway a while ago he had a cough so I took him to the vet myself and got medicine for it... He was on it for a couple months and the cough never fully went away but was here...

My 4 inch green sunfish decided to jump ship a few days ago, I came into the room, and he was stuck to the carpet. I revived him to the best of my ability, but he's been losing strength, and now he's laying on his side, and his gills have slowed down immensely, he hasn't eaten in 4 days, and I...