Abstract:
Mentulik river is one of the floodplain river ecosystems in Riau Province and the
natural habitats for many fish species. Hidung Budak fish (Ceratoglanis
scleronema Bleeker 1862) is one of the fish found in Mentulik River. This study
was aimed to determine the reproduction aspects of C. scleronema such as
sexuality, sex ratio, gonad maturity level, fecundity, eggs diametre and gonad
maturity index. This study has been conducted on November 2014 until April
2015 in Mentulik River. The number of fish obtained were 65 individuals with 39
males and 26 female and sex ratio 1.5:1. The growing patterns of male and female
fish was allometric negative. Gonad maturity level for male fishes founded were
TKG I-IV and female were TKG I-V. The average length and body weight
female fishes were ranged from 31.73 to 44 cm and174.3 to 285.06 g and for male
fishes 35.3 to 41.33 cm and 155.09 to 249.97 g. Fecundity were ranged from
6191-32008 eggs, with a relatively uniform diametre of eggs in each sub section.
The result indicated that C. scleronema is a total spawner.
