The king of herrings or giant oarfish , '' Regalecus glesne '' , is an oarfish of the family Regalecidae that is found in all the world 's oceans at depths of between 300 and 1000 meters .
The king of herrings or giant oarfish , '' Regalecus glesne '' , an oarfish of the family Regalecidae , is the world 's longest bony fish . 
 Rarely sighted , it is found in all the world 's oceans at depths of between 300 and 1000 meters .