Are those sword tails or platys? Please don't flush. As others have said, there are several places to post ads for free fish. Even if you had to drive half way to meet someone from a little distance away, it would be worth it.
In my area, the local Petco used to take in fish as "adoptions", although I haven't been there for some time so not sure about current practices. I'm also lucky enough to have a good LFS nearby, which is how I got myself out of a guppy nightmare - similar, but a bit worse, than your situation - several years ago. If you can find a LFS, it would be worth a one-time drive to have these fish re-homed properly.
You might also look to see if there is a local fish club nearby. They will often have sales/trades at their meetings or can spread the word further.