Source of Torpedo

[Yasunori Hayashi]

My collegue is looking for a commercial source of Torpedo (electric ray).  
He needs its electric lobe.  Any information is welcomed.

Thank you.
Yasunori Hayashi
Department of Neurophysiology, Institute for Brain Reserch
Faculty of Medicine, University of Tokyo, Japan
3-1 Hongo 7-chome Bunkyo Tokyo 113 Japan
yhayashi at ims.u-tokyo.ac.jp
yhayashi-tky at umin.u-tokyo.ac.jp