Saputra, A., Wulandari, A., Ernawati, ., Yusuf, M., Eriswandy, I. and Hidayani, A. (2018) “Masculinization of guppy fish (Poecilia reticulata Peters, 1859) with extract of sea cucumber (Holothuria scabra)”, Jurnal Iktiologi Indonesia, 18(2), pp. 127-137. doi: 10.32491/jii.v18i2.427.