Born in 1967, Prof. Dr. Widanarni is a lecturer in Department of Aquaculture, Faculty of Fisheries and Marine Science, Bogor Agricultural University since 1994. She graduated her Fisheries Bachelor’s majoring in Aquaculture in Bogor Agricultural University in 1991. She completed her master study in Microbiology in 1999 and her doctoral study in 2004 in the same university. She has been studying and performing research in microbiology, probiotic, prebiotic, and synbiotic in Aquaculture since 1998, during which she has published some scientific papers in reputable national and international journals. Since May 2017, she has pointed as a Profesor in Fish Probiotic. She also interests in fish disease and another fish health research.