Sawfish snout senses, swipes and stabs

The spectacular snouts of sawfish are

revealed as complete hunting weapons, sensing prey and killing them. The saws, which can grow more than a metre long in some species, have previously been identified as able to sense prey by their electric fields. Now, researchers have filmed the fish impaling prey on the teeth of the saws. They suggest in Current Biology that sawfish are more active hunters than previously thought, which could help in their much-needed conservation.

All seven species are listed as Critically Endangered on