The stream bluet (Enallagma exsulans) is a species of American bluet damselflies in the family Coenagrionidae.

Many bluet species prefer ponds and lakes; the stream bluet as its name implies is most at home along moving waters.

In many species of damselflies the males have a blue tip to the abdomen.

Enallagma exsulans is one of those less common cases where the female, too, has a blue abdominal tip.

Summertime is the best time to look for stream bluets.