Introduction to the NRL for fish, Shellfish and Crustacean Diseases; Koi Herpes Virus (KHV, CyHV-3) in the Netherlands and abroud; First case of Koi Sleepy Disease (KSD) by Carp edema virus (CEV) in the Netherlands; Quality Assurance occording to ISO 17025 at Fish Diagnostic Laboratories in Europe: practice and Status. Combined lecture