Though people often talk about Asian carp as if it were a single species, the term is a catchall for four fish. All four are native to China, where they’re referred to collectively as 四大家鱼, a phrase that translates into English roughly as the “four famous domestic fishes.” The Chinese raise the famous four together in ponds and have been doing so s

They rely less on sight when they hunt and more on ultrasound. They make high-pitched calls and then listen to the echo sent back by objects and potential prey. Visual camouflage doesn’t help one little bit, because the flying mammals are “seeing” with their ears. Therefore, the moths must make themselves invisible to hearing. But how do you do tha