Box of 20 Authentic Dried Porcupine Fish or Porcupine Blowfish with sharp spines.  They measure 5 to 6 inches long.  Each dried porcupine fish has a hanger for easy display, fake wiggly eyes and a seam that runs the length of their body where the meat was removed. They are also also known as balloonfish or globefish.  Porcupine fish have heavy spines over their entire body. They inflate their body to increase their size as a defense mechanism.