Id eat em. popcorn tetras.
Seriously is get rid of them, its easy to find someone to take fish at the LFS.
My LFS took some 9 or so tetras from me that I bought from her store and cycled 3 tanks with they are still doing great and are the largest tetras she has including same species, she gave me store credit for it, shes a manager so she has that perk of the job but it doesnt hurt to ask for that either.
Youve worked hard on that planted tank, its a shame some pesky fish destroyed some of the plants.