The following pictures were taken by Carolyn Weise of Ecological Laboratories at a recent koi health and breeding seminar at the University of Georgia in 2006, and a koi health seminar taught in Reno, Nevada in 2007.  These pictures show the correct way to inject fish if you wish to do a an intra-peritoneal injection.  Please make sure you use the proper angel when injecting fish, so that you do not damage the internal organs.