Albino Cory Cat Mouth Rot?

[armysoldier21]

I am not sure what caised this. But I moticed this morning that my cory was acting a little strange and upon further investigation I noticed his mouth looked rotted away a little. I love my fish as much as the next guy if not more so I went online and did as much research as possible. So far what I did was a 10 gallon water change via gravel vacuum and put in a bit warmer water than I usually would as the 10 gallons to replace the old. I hope this is not a lost cause as losing any fish is a tragedy in my house and we have a lot of fish to lose. All the other fish look perfect even my other two albino corys....

Tank specs for this one in particular.
25 Gallons, heated to 82 degrees, 29 gallon filter, about an inch of gravel, one live plant, an aerating stone, one decorative bridge that my fish swim in and out of. Other fish are (1) Swordtail, (1) clown loach, (2) ghost cats, (2) adult mollies and about 20 very small babies currently until they find a home, and (3) total albino cory cats.

Thank you in advance for any advice and help. I was planning on going to a pet store tomorrow to look at meds, as IIcant rush out now since its almost 2 in the morning.

 

[DoubleDutch]

Pic How long do you keep this fish, what are you feeding them?

 

[Wildbetta]

Sounds like a bacterial infection but without pics it is hard to be sure.  
 
What are your water parameters?  Ammonia/NitrIte/NitrAte
How often are you doing water changes and how much water?
Do you vacumn your gravel with your water changes?
 
These questions will help in seeing the "big picture" of what is going on with your tank.
 
A word on your stocking.  The clown loach will get WAY too big for your tank and needs a much bigger tank.  The ghost catfish need a big school to be happy and a bigger tank as well to handle the number you need. I don't recommend them in groups smaller than 10 individuals. Your albino corys will be happier/feel safer with at least 3 more of their on kind.  Also 82F is just a bit high for the corys to be completely comfortable/