There are many different types of gourami, and some are more peaceful than others. The most peaceful gourami is the Pearl Gourami. This type of gourami is very gentle and docile, and is a great addition to any community tank. They are also very beautiful fish, with their iridescent white bodies and long fins. If you are looking for a peaceful gourami to add to your aquarium, the Pearl Gourami is the best choice.