Rakhmawati, Euis, Muhammad Zairin Jr, and Dinar Soelistyowati. 2019. “Masculinization of Featherfin Squeaker Synodontis Eupterus Boulenger, 1901 Larvae Using Javanese Long Pepper Extract Piper Retrofractum and Increased Rearing Temperature”. Jurnal Iktiologi Indonesia 19 (2), 259-69. https://doi.org/10.32491/jii.v19i2.482.