Rescue frog with bloat

[tameyourself]

When did this occur? And do you know if it's hard bloat or soft bloat? Both tend to be caused by poor water conditions, so:

-How many gallons is the tank?
-How often do you preform water changes?
-What is your filter set up?
-What are the tank's other inhabitants?
-That's the water's temperature/ammonia/nitrate/nitrite/pH levels?

I recommend immediately quarantining the frog and treating it with a salt bath (try a tablespoon of Epsom salt for every 5 gallons? Also look up other people's recommendations, for they vary) and Maracyn just in case until you can get to the vet.

I just got these frogs yesterday. I do not know the specifics about how they were being kept.

What is the difference between soft and hard bloat? The swollen areas are soft.