The gonad maturity and fecundity of toman fish (Channami cropeltus) during rainyseason to dry season periode in Rawa Danau Panggang waters, Hulu Sungai Utara Regency, South Kalimantan, Indonesia

Abstract

This study objectives to evaluation the level of gonad maturity and fecundity of toman fish living in the habitat of swamp waters Danau Panggang, Hulu Sungai Utara Regency, South Kalimantan during the transition season period (rainy to dry season). Fish sampling were carried out every month for six month from April to September 2018. The determining method of the sampling location used an analytical survey method. The result showed the ratio sex male : female = 55.8% : 44.2%, the weight range of 0.18 to 32.2 gram and the level gonad maturity varied form Gonad Maturity Level (GMI) I – IV, increase from rain season to dry season. The opportunity for have mature gonads base on weight is more than 1.90 kg. Fecundity result obtained 5.24% (rain season) to 60.35% (dry season). This data shows that toman fish can spawn throughout the year with peaks in the dry season.