Ringo Ringo Star Osrin, B. M. M., Iskandar, Junianto and Irfan Zidni (2025) “Masculinization of Mutiara’s Catfish (Clarias gariepinus) Using Cow’s Testicles Flour Through Immersion Technique”, Grouper, 16(1), pp. 57–70. doi: 10.30736/grouper.v16i1.288.