Elisdiana, Y., Soelistyowati, D. and Widanarni, W. (2016) “Induction on gonadal maturation of male striped catfish Pangasianodon hypopthalmus (Sauvage, 1878) using Javanese long pepper extract Piper retrofractum Vahl. enriched feed”, Jurnal Iktiologi Indonesia, 16(1), pp. 35-44. doi: 10.32491/jii.v16i1.47.