The Ph.D. viva session was held in the auditorium of the Iranian Fisheries Science and Research Institute for Ms. Hamideh Kordi (admitted for fall 2012) who was the research-based Ph.D. student. The title of her dissertation was "Investigating the use of iron nanoparticles and the effect of coated probiotic (Lactobacillus plantarum KC426951) on growth, durability, bacterial flora of the intestine and safety indicators of rainbow trout". The student completed her education in the field of reproduction and production of aquatic organisms at the National Inland Water Aquaculture Institute (Bandar-e Anzali). The doctoral thesis supervisors were Dr. Alireza Valipour and Dr. Mahmoud Hafezieh and the doctoral thesis co-supervisor was Dr. Alireza Shenavar Masuleh. Members of the thesis examination committee were Dr. Abolfazl Sepahdari, Dr. Roaha Kasra Kermanshahi and Dr. Maryam Mirbakhsh. The doctoral thesis received a high grade.