Catfish Detect Chemicals in Prey's Breath

Japanese sea catfish hunt at night, using an array of senses to peer through the dark water and find their prey.Now scientists have discovered an additional way that the fish find food: Detecting slight chemical changes in the water produced by the breath of a sea worm.Read how they do it at National Geographic's Weird & Wild blog: 'Swimming Tongue' Catfish Sense Chemicals in Prey's Breath.