The performance of first generation Of domesticated javaean barb (Systomus orphoides) fry

Abstract

The existence of native fish in Indonesian waters, especially in West Java, is under threat due to environmental damage. The domestication of javaean barb (Systomus orphoides) is directed to save the existence of this species and provide economic benefits for the aquaculture community. This study aims were to obtain information about the potential production of larvae and fry of javaean barb that was reared in ex-situ. The parameters observed were fecundity, fertilization rate, hatching rate, the survival rate of larvae, fry growth rate, feed conversion ratio, and fry survival rate. The results showed that javaean barb could be spawned ex-situ through induce breeding techniques. Fecundity was 96 632 ± 24 012 eggs/fish with a fertilization rate of 98.3 ± 1.50% and a hatching rate of 64.5 ± 27.10%. The survival rate of 3 days old larvae was 85.2 ± 7.50%. The growth rate of javaean barb fry was positive allometric. The weight-specific growth rate was 4.9 ± 0.22 % with an FCR of 1.7 ± 0.28 and survival rate of 89.3 ± 4.16%. The success of ex situ javaean barb seedling production opens opportunities for developing this species cultivation in the future.

EFFECT OF A SUPPLEMENTED DIET WITH MELATONIN ON PERFORMANCE OF JAVAEN BARB Systomus orphoides (Valenciennes, 1842) JUVENILE

“…Javaen barb is a native fish in Indonesian inland water with economic value and the potential to be developed as cultured fish resources and ornamental commodities (Dewi et al, 2021). In Southeast Asia, this fish was found in the waters of Myanmar, Thai-land, Mekong, and the Malay Peninsula (Fishbase, 2023;Iswantari et al, 2021;Ut et al, 2020;Cahyanti et al, 2020;Panprommin et al, 2019).…”

“…In aquaculture development, the problems that often occur are not only in their reproductive performance but also in the adaptation process and low survival. Observational data showed that the survival rate of Javaen barb fish juveniles was only around 40-60% (Dewi et al, 2020). In addition, when rearing in aquaculture containers, Javaen barb fish are susceptible to disease, especially Aeromonas hydrophila.…”

“…In addition, when rearing in aquaculture containers, Javaen barb fish are susceptible to disease, especially Aeromonas hydrophila. It can cause a mortality rate of up to 80% (Dewi et al, 2020). Therefore, efforts are needed to overcome these Effect of supplemented diet with melatonin on performance... (Mira Mawardi) problems to support the development of Javaen barb fish farming.…”