The bats are back! The Noctilionidae family consists of only two species: the greater and lesser bulldog bats. These bats are sometimes called "fisherman bats". While the lesser bulldog bat is mainly insectivorous (feeding on aquatic insects such as water striders and water beetles), the greater bulldog bat mainly eats fish. It uses echolocation to detect ripples on the waters surface and scoops up fish using the pouch between its legs.