Missing Part of A Fin?

[Phoxly]

Ughhhh poor Goku =( he's missing part of his pectoral fin on his right side. I don't have a doctor tank or anything setup. :( I heard betta max is good for healing... and like a tablespoon of salt in a 10 gallon?

Its a little swollen on that side, like he got stuck to the filter, its a little puffy around where his fin meets his body.

[Phoxly]

He's using whats left of his fin today, yesterday he had it clamped to his side when he swam, now he is trying to use it as much as he can I think :( he has a hard time swimming. I had to move some plants cause he would get stuck.

[Phoxly]

Nevermind :( he's not trying to use it... its just so swollen its pushing it out :( he has alot of white fuzzy stuff around it..... I don't know what to do.

[Phoxly]

My sister told me that he is just sitting at the bottom of the tank, not moving, but his gills are moving...

[Oldfishlady]

I would find something to put him in to make a QT tank and start treatment right away. Anything will work that is half to 1g in size, even one of those little betta cup will work.
Start making 100% daily water changes along with aquarium salt 1tsp/gal for 10 days and lower the water level so he doesn't have to struggle to swim, feed him a high protein diet.
If you have IAL or oak leaves add them too
I like to pre-mix my salt water and steep the oak leaves in a clean 1g jug to make dosage and water changes easier.