Tim Colston from the University of Oklahoma filmed a giant waterbug (genus Belostoma) preying upon a cave molly (Poecilia mexicana) in the Cueva del Azufre, Tabasco, Mexico. These bugs belong to the most important cave fish predators in the Cueva del Azufre system (see Publications). The Belostoma photo is from Barbara Strnadova (http://dova-imagery.com/).