Can a betta fish and a Glofish live together?

yes and no. glowfish are tropical and require a heater.

golfdish are "coldwater" fish and do better in lower temps and do not need a heater.

goldfish usually do well at around 66 to 68 i believe.

and glowfish need at least 75

i guess you could put them together.

also, remember that for fancy goldfish you need at least 10 gallons for one with no other fish. so hopefully you have a nice big tank

what size tank do you have?