Dalmation Molly Injured- Help

[mollygirl7]

I used to breed mollies but due to a change in demands on my time i can no longer keep it up so as my four fish one by one expired(they were kinda old) I did not replace them. So I am on my last fish, a dalmation molly I have dubbed "His Highness King Charles III". Last night I got home and found Charles stuck to the intake tube of my tank filter and unable to free himself. I have no idea how long he was like this but when I freed him he just sank to the bottom and sat there, gills moving but no other movement. I was sure he was done for, so I left him there . However I found him this morning in a different spot and still breathing

I need to know if there is any chance he might live. His sides look a bit "deflated" so maybe his swim bladder is empty and that's why he's staying on the bottom(???). Let me know what I can do to help/save him ASAP!!!!!!!
If you think he needs to be euthanized, tell me so I can save him from suffering.

 

[WILDER]

Sounds like he might of damaged his swim bladder, fingers crossed, is he still laying on the bottom of the tank unable to swim and maintain his balance.

Do you have any scaless fish in the tank as salt might help with the stress.