Fly is a tagalong for c/3 orthogonal spaceships that was found by David Bell in April 1992. It is shown to the right attached to the back of the 25P3H1V0.1 spaceship, also found by Bell. It can also be attached to the back of 60P3H1V0.3, as shown below, and flies can be attached to the back of each other, creating an extensible tagalong.