>>32783931CoM (Center of Mass) is too far back. They would just backflip over as there`s nothing to compensate for it. No yaw control too, other than the ear fins, so they would go into a flat spin.The main body is similar to a flipped upsidedown wing so at increased speed the pressure would try to pitch them down heavily ( given that we ignore the CoM problem aswell as no yaw/pitch) control.
Latias/Latios would be a bad as a plane, but great for cuddling.
