It’s probably not Jupiter’s reflection. Planets and bright stars can reflect off water, especially in long exposures, but those reflections are usually narrow and comparable in width/brightness to the source, or point-like if the water is very still.

In your case, the broad streak looks less like a planetary reflection and more like another light source or an artifact. One answer specifically notes the green streaking, which strongly suggests a passing boat or other moving light source rather than Jupiter. That also fits a long-exposure “astrophotography mode,” which can turn small moving lights into elongated streaks.

A ghost image from the Moon is another possibility in general, but based on the answers provided, the most likely explanation for this particular streak is a boat/light source, not Jupiter. So yes, celestial objects can reflect on water — but this feature is unlikely to be a true Jupiter reflection.