Gonadosomatic index and hepatosomatic index of Bonylip Barb (Ostechilus vittatus) from Lebak Kalong Floodplain, Ogan Komering Ilir, South Sumatra, Indonesia

Abstract

Bonylip barb (Osteochilus vittatus) is one of the freshwater fish species found in the Kalong Floodplain, Ogan Komering Ilir Regency. This species has high economic value locally. The purpose of this study was to determine the distribution frequency distribution, gonadosomatic index, and hepatosomatic index of O. vittatus from the Kalong Floodplain. This research was conducted in Kalong Floodplain, Ogan Komering Ilir Regency, from June to August 2023. The research method used is direct observation with a purposive sampling technique. A total of 24 O. vittatus were used in this study (15 females and 9 males). The results showed that the highest frequency distribution of O. vittatus body weight was 21–30 g (29.2%); the lowest was 71–80 g and 81–90 g (4.2%). The gonadosomatic index of female O. vittatus was 10.05%, and the gonadosomatic index of male O. vittatus was 8.16%. The hepatosomatic index of female O. vittatus was 1.23%, and the hepatosomatic index of male O. vittatus was 1.13. The gonadosomatic index and hepatosomatic index of female O. vittatus were greater than those of males.