Domestication of Javaen Barb (Puntius orphoides) as Indonesian Endemic Fish: Breeding the Aquaculture Commodity Candidate to Increase Seed Productivity

Abstract

Indonesia has a very high aquatic biodiversity, including local fish scattered in several areas. Currently, these resources are decreasing and even threatened with extinction if not noticing the environmental balance factor. Natural damages to the aquatic environment and increased fishing activity can cause the fish population and diversity to decline, even threatening the extinction of certain types of fish. Puntius ophoides is a commodity that has not yet developed its culture technology, so efforts are needed to investigate its reproductive biological aspects to encourage the culture development and maintain its sustainability level. The purpose of this study was to evaluate the effectiveness of PMSG hormone on the gonadal maturation pattern of this fish. This study used a completely randomized design (CRD) with four treatments and three replications, namely: 0 IU/kg, 5 IU/kg, 10 IU/kg, and 15 IU/kg body weight. The results showed that PMSG treatment at 10-15 IU/kg obtained the best performance compared to other treatments. PMSG hormone treatments could increase the gonadosomatic index (GSI) value by 15% compared to the control treatment. Increased hepatosomatic index (HSI) value was also shown at the end of the study with an average IHS value of 2%. This means that the PMSG hormone affects the vitellogenin production in the liver.