dermocystidium

Hi. I have what seems to be small white worms on my Cardinals and I am sure it is Dermocystidium: https://www.askjpc.org/wsco/wsc_showcase2.php?id=Y0VrSXBQZUNkbzcxaGZtbEhON20zUT09 Picture is 100% like three of my tetras. Have anybody here encountered this and treated it? LFS says eSHa gdex will...