Kucharczyk, Dariusz, Daniel Żarski, Sławomir Krejszeff, Joanna Nowosad, Maria Biłas, Katarzyna Targonska, and Katarzyna Palinska-Zarska. “Use of an Ultrasound Device to Determine Sex and to Perform Gonad Biopsy in the European Eel Anguilla Anguilla”. Brazilian Journal of Veterinary Research and Animal Science 53, no. 2 (July 1, 2016): 199–206. Accessed May 5, 2024. https://revistas.usp.br/bjvras/article/view/107482.