The Ph.D. viva session was held in the auditorium of the Iranian Fisheries Science and Research Institute for Mr. Ismail Peghah (admitted for fall 2014) who was the research - based Ph.D. student. The Ph.D. viva session was held on Saturday, dated 2 November 2019. The title of his dissertation was "Effect of different levels of dietary lactoferrin and soy lecithin on growth indices, survival, digestive enzymes, antioxidant enzymes and immune system of juvenile Sobaity seabream (Sparidentex hasta)". The student completed his education in the field of fisheries sciences – reproduction and production of aquatic organisms at the South of Iran Aquaculture Research Center - Khuzestan (Ahvaz). The doctoral thesis supervisors were Dr. Jassem Ghaflah Marmazee and Dr. Nasser Agh and the doctoral thesis co - supervisors were Dr. Farzaneh Nouri and Dr. Abolfazl Sepahdari. Members of the thesis examination committee were Dr. Mahmoud Hafezieh, Dr. Seyed Morteza Hosseini and Dr. Abdolmohammad Abedian Kenari. The doctoral thesis received a high grade.