Make sure you keep the water really clean in order to prevent infection. Despite their fins they look like they are going to make it. (((Goodvibes)))

Taco definitely looks male by the way.

Next time talk to the manager no matter what. Sometimes they aren't completely hopeless and will at least listen.

Sadly it's pretty common, some idiot (not necessarily a teen, by the way) just thought it was funny and a lot of the time the fish section isn't well supervised and it's easy to do. :/