Glo fish are normally tetras that have been injected with florescence. So it is okay to keep goldfish barbs, plecos, cory cats and other peaceful aquarium fish with them. You can't keep cichlids with them. Either African or south American species except maybe angel fish. You should just ask at the store to check when you buy your new fish.
Tetra, Molly, Swordtail, Platy, Danio, Bloodfish, Hatchetfish, Characin, are some that will get along well. You will find that all these fish come in many different colors and sizes. You could for instants fill your tank with just the many different tetra and still have a wonderful array of different colored fish.
Glo fish are just genetically modified zebra danios so they can go with platies, mollies, guppies, leopard danios, tetras, barbs, catfish that stay small, and sword tails.
Since glo fish are a contrived fish anyhow, they would fit in with any peaceful community tank. I would recommend molly's, guppies, swordtails. Make certain that you do not overcrowd your tank. One gallon of fish per each inch of fish. Glo fish are fun but after a time the glow disappears and they are regular fish again.
The best fish to put in a tank with glo fish are other non aggressive "community" fish that won't harass your glo fish. . Tetras, mollys, platties, and goldfish are all good fish to add to a tank with glo fish. You should avoid more aggressive fish like barbs, swordtails, and cicilids.
The glo fish is a peaceful, but active fish, and as such, should be housed with other peaceful fish. While he may chase other fish, he will rarely inflict injury. However, it is best to not place this fish with slow-moving, long finned fish. Bettas, barbs, Clown Loach, Mollys, Red-Tail Sharks are a few who are compatible.