Nope. A 5 gallon tank is pretty limiting. Most fish are simply too big, too active or need too many other fish in their school for a 5 gallon to support. You could do an ADF pair, or a betta. That's pretty much it. A trio of Endler males is a possibility, but they do better in a planted tank that holds at least ten gallons.
For 3 or less SGs with no other fish, it would be fine. Trust, I'm the last person to suggest someone keep a fish in tight quarters, but these really are a shy and sedentary fish. Three short-finned guppy in a 5 gallon would be terrible, they are much too active and need more room. But not only could 3 Sparkling Gourami live in a heavily planted 5g, but they'd be happy to do so.