Copyright @ 2017, Indonesian Aquaculture Journal, e-ISSN 2502-6577 15 Indonesian Aquaculture Journal, 12 (1), 2017, 15-20 # Correspondence: Institute for Freshwater Aquaculture Research and Fisheries Extension. Jl. Sempur No.1, Bogor 16154, West Java, Indonesian. Phone: + (0251) 8313200 E-mail: deniradona_kkp@ yahoo.com Available online at: http://ejournal-balitbang.kkp.go.id/index.php/iaj ANALYSIS OF GROW TH OF LALAWAK Barbonymus balleroides (VALENCIENNES, 1842) IN THREE CULTURE METHODS Deni Radona # , Vitas Atmadi Prakoso, and Irin Iriana Kusmini Institute for Freshwater Aquaculture Research and Fisheries Extension (Received April 2017; Final revised 19 June 2017; Accepted 19 June 2017) ABSTRACT In fish culture, optimal growth could be influenced by various culture methods. Aim of the study was to evaluate the productivity of Barbonymus balleroides , lalawak in floating net cages, concrete ponds, and earthen ponds. Cultivation was designed with the circulation water system. Experiment was conducted using completely randomized design with three treatments and three replications for each treatment. The experimental fish, sized of 4.20 ± 0.64 cm SL and weight of 2.14 ± 0.99 g, were obtained from induced breeding. The stocking density used was 20 individuals/m 3 . Fish were fed 3%of total weight two times every day using commercial pellet with 35%protein content for 90 day. The result showed that lalawak reared in earthen pond was no significant difference on length, weight, and biomass compared with that one in concrete pond (P> 0.05), but significantly different (P< 0.05) with floating net cages. There were no different (P> 0.05) among the three different culture systems for survival rate and FCR. Lalawak reared on earthen pond system supported with optimal water quality could increase productivity value. KEYWORDS: lalawak; growth; culture; ponds; floating net cages INTRODUCTION Lalawak Barbonymus balleroides is a native fish from Indonesian waters. The fish is known as the com- modities of high economic value for consumption. In West Java Province, lalawak spread widely in Sumedang and Cianjur Districts. In nature, this fish live at the bottom side of fast-flowing waters such as rivers and lakes. Lalawak is classified as herbivorous species which eat aquatic plants. Domestication of lalawak in Indonesian has been conducted since 2006 but has not been carried out intensively (Yulfiperius, 2006). Domestication is only limited studies on morphological characteristics and reproductive aspects using nutrition and the environ- ment approach. Aquaculture of lalawak was conducted since the population of lalawak as local species is become scare in the freshwaters due to the high catching levels of wild. According to Sukadi et al . (2011), aquaculture development based on local spe- cies of fish should be done in order to maintain of biodiversity and the development of aquaculture for food security. Since the lalawak population has be- coming rare due to the high exploitation in the wild, the culture activity should be done to conserve it as the potential local species for sustainability and food security. In order to support the domestication program, management system of aquaculture is required. The proper culture system is needed to support optimum fish growth. Kusmini et al . (2017) reported that lalawak reared in the aquarium for 90 days with a density of 4 individuals/L has a survival rate value of 54% and specific growth rate of 2%/day. This study aimed to evaluate the productivity of lalawak in floating net cages, concrete pond, and earthen pond. MATERIALS AND METHODS This study was conducted in March-June 2016 in Germplasm Research Station, Cijeruk, Bogor. The lalawak fish, sized of 4.20 ± 0.64 cm SL and weight of 2.14 ± 0.99 g, used in this experiment were ob- tained from induced breeding. Induced breeding method was referred to tinfoil barb Barbonymus schwanenfeldii (Huwoyon & Sukadi, 2009). Fish was reared in (A) floating net cages sized 2 m x 2 m x 2 m; (B) concrete pond sized 5 m x 2 m x 1 m; and (C) earthen pond system sized 8 m x 5 m x 1 m. Stocking was density of 20 individuals/m 3 . All rearing facilities were equipped with recirculating system. Completely