To save you the trouble of researching it, I will give you the answer myself: No. Most online profiles of the DG will show that it needs 10 gallons or more < That is false.
A Dwarf Gourami needs at least a 20 gallon tank minimum as being as active as it is and how it is not really that aggressive in bigger tanks like 20+ gallons.
Try a Honey Gourami instead - Just as cool, and not really aggressive at all.