PERFORMANCE OF TINFOIL BARB HYBRIDS Barbonymus schwanenfeldii (Bleeker 1854) FROM JAVA AND KALIMANTAN

The Tinfoil barb Barbonymus schwanenfeldii (Bleeker 1854) is a native fish from Indonesian freshwater which is scattered in several places, such as Sumatra, Java and Kalimantan. The Tinfoil barb has high economic value in consumption. The aim of this study was to determine the performance of growth and the value of heterosis from cross-breeding of tinfoil barb from Java and Kalimantan with the reciprocal cross. The reciprocal cross was carried out at the Instalation of Institute for Freshwater Aquaculture Research and Development, Bogor,  Indonesia. Gonad maturation was induced by feeding the fish with 3% of body weight three times  a day. Spawning was artificially induced using hormone stimulation (with dosage of HCG 500 IU/Kg and LhRH analog (Ovaprim) 0.6 ml/Kg). A interval  between the injection of HCG and ovaprim was 24 hours. Spawning took placed in  aquarium sized 100 x 50 x 50 cm using the ratio 1 female : 1 male with three times replications. After 60 days of rearing period, ♀ Kalimantan and ♂ Java hybrid showed highest growth performance in length and weight, survival rate and heterosis value (Table 1 and 2). The growth of its Length and weight was significantly different (P<0.05).