“…Until now, little information has been available on the sperm biology of sturgeon, including ultrastructure and morphological functions (Cherr and Clark 1984, 1985, Ciereszko et al 1994, characterization of motility and fertilization ability (Gallis et al 1991, Linhart et al 1995, Tsvetkova et al 1996, Toth et al 1997, Williot et al 2000, respiration and energetics of motility of spermatozoa , Ingermann et al 2002, the correlation between spermatozoan motility parameters and biochemical characteristics of seminal plasma (Gallis et al 1991, Toth et al 1997, Ingermann et al 2002 and cryopreservation and short-term storage (Tsvetkova et al 1996, Jahnichen et al 1999. Unfortunately, data concerning biological aspects of sperm in the Persian sturgeon are rare .…”