11.1. Aetiology of Tenacibaculum group 11.2. Sampling 11.2.1. Preparation and shipment of samples from fish 11.2.2. Live fish 11.3. Diagnostic procedures for Tenacibaculum group 11.3.1. Presumptive diagnostic from fresh samples 11.3.2. Primary cultivation of bacteria (choice of media and isolation of strain) 11.3.3. Screening of pure cultures 11.3.4. Identification of the strain 11.3.4.1. API 11.3.4.2. Mass spectrometry (MALDI-TOF) 11.3.4.3. PCR 11.3.4.4. Typing of the bacteria 11.3.5. In vitro susceptibility testing References Photos