Scientists determine fish are magnetic
In a study recently published in Current Biology, scientists from the University of Oldenberg in Germany have determined that fish use magnetic fields to find their way back to their birthplace. Consistent experiments show that the larvae of Doederlein’s cardinalfish, Ostorhinchus doederleini, will swim south south-east after being thrust into the ocean’s currents. However, when scientists applied a magnetic field to tanks of newly hatched larvae, and then adjusted it by 180-degrees, the fish adjusted their direction every time.