Can Neon Tetras live with Fancy Guppies and Glofish? What fish can live with neon tetras?

You can keep all of them together. And since they need to be kept in schools of at least six and you have a 70 gal tank, you can have a couple of nice size schools of fish. In that tank you could also have a school of cories or a few platys or bristlenose pleco... pretty much any of the peaceful community fish.