Viability of Najawa carp (Cyprinus carpio L.) sperm at 4°C temperature storage Dimas Fendy Pradana, Ignatius Hardaningsih and Dini Wahyu Kartika Sari E3S Web Conf., 147 (2020) 01015 Published online: 10 February 2020 DOI: 10.1051/e3sconf/202014701015