<p class="BasicParagraph" align="center"><strong>ABSTRACT</strong></p><p class="BasicParagraph" align="center"><strong> </strong></p><p class="Pa2">This research was conducted to evaluate the performance of eel production at stocking density of 2 g/L, 3 g/L, and 4 g/L reared in recirculating system for 60 days. The experimental design used was completely randomized design. Fish were fed on sinking pellet given according to body weight. Collected data were survival, specific growth rate, biomass growth, feed convertion ratio, weight variance, blood profile, blood glucose, and cortisol levels.The results showed that the best performance was found in 4 g/L density with specific growth rate and biomass growth were 0.99±0.30 and 7.50±4.13 g/day, feed conversion ratio of 1.22±0.58, and weight variance of 21.72±3.60%. Stress responses parameters which consisted of cortisol and blood glucose levels showed no significant difference at 22.45± 8.59 nm/L and 31.92± 4.29 mg/dL, respectively. Blood profile in form of hemoglobin, hematocrit, red blood cell and differential leukocytes showed no significant differences except for the leukocyte parameters with the highest rate was achieved at the stocking density of 4 g/L (2.70±0.001x105 sel/mm3). In conclusion, the stocking density of 4 g/L produced the best physiological and production performance.</p><p class="Default"> </p><p class="Default">Keywords: stocking density, growth, physiological response, eel, recirculation system</p><br /><p class="BasicParagraph"> </p><p class="BasicParagraph" align="center"><strong>ABSTRAK</strong></p><p class="BasicParagraph"><strong> </strong></p><p class="Pa2">Penelitian ini bertujuan untuk mengevaluasi kinerja produksi dan respons fisiologis ikan sidat pada padat tebar 2 g/L, 3 g/L, dan 4 g/L dalam sistem resirkulasi selama 60 hari. Rancangan percobaan yang digunakan adalah rancangan acak lengkap. Pakan berupa pelet tenggelam diberikan sesuai bobot tubuh. Data yang diambil meliputi kelangsungan hidup, laju pertumbuhan spesifik, laju pertumbuhan biomassa, konversi pakan, koefisien keragaman bobot, gambaran darah, kadar glukosa darah, dan kadar kortisol. Hasil penelitian menunjukkan bahwa padat tebar berpengaruh nyata (P&lt;0,05) terhadap laju pertumbuhan biomassa; pertumbuhan biomassa terbaik dicapai pada kepadatan 4 g/L dengan laju pertumbuhan spesifik dan laju pertumbuhan biomassa sebesar 0,99±0,30 dan 7,50±4,13, konversi pakan sebesar 1,22±0,58, dan koefisien keragaman sebesar 21,72±3,60%. Parameter respons stres yaitu kadar kortisol dan glukosa darah tidak menunjukkan perbedaan yang nyata, yaitu masing-masing sebesar 22,45±8,59 nm/L serta 31,92±4,29mg/dL. Gambaran darah berupa hemoglobin, hematokrit, jumlah sel darah merah dan diferensial leukosit tidak menunjukkan perbedaan yang nyata (P&gt;0,05), kecuali pada parameter leukosit dengan nilai terbaik pada perlakuan 4 g/L (2,70±0,001 x105 sel/mm3). Hasil penelitian menunjukkan bahwa padat tebar 4 g/L menghasilkan kinerja fisiologis dan produksi terbaik.</p><p class="Default"> </p>Kata kunci: padat tebar, pertumbuhan, respons fisiologis, ikan sidat, sistem resirkulasi

The water level in the cultivation of eel (Anguilla bicolor bicolor) is an important study in order to provide the optimal water level for cultivation. Optimizing the water level will affect the substitution of respiration energy with energy to grow. In addition, the water level information is related to the efficiency of water use for eel production in the future. Information on water level for eel production is still very limited, so this research is necessary to do. A total of 120 eel elver (initial weight 13.66 ± 0.09 g) were collected from eel companies in Bogor City, Indonesia. Fish were reared in vertical aquaculture systems with a stocking density of 10 fish per container for 60 days. The artificial feed containing 55% protein given as much as 3–5% of the biomass. Absorption and water replacement were done 20% per day. The result of this research showed that fish weight increased with an average of 33.45 ± 0.33 g. Different water levels had an impact to KKb, SGOT, ALP, and He. There was erosion of the skin epidermis and necrosis of the gill filaments due to the adaptation process. Water quality was within the optimum range for all treatments and 1.5 cm water level is recommended for maintenance (SGOT, ALP and He values were closest to normal values).

Aquaculture is is often constrained by the availability of water, both in quality and quantity. The aim of this study was to determine the optimum maintenance system of elver (Anguilla bicolor bicolor) on a wet, moist and dry system through production performance studies and physiological responses. The research was conducted from August to September 2018 at the Production Technic and Management of Aquaculture Laboratory, Department of Aquaculture, IPB University. A completely randomized design with 5 treatments and 3 replications was used in this study, namely treatment with high water wet system 0% of body height (A), high water wet system 50% of body height (B), high water wet system 100% of body height (C), moist system (D), and dry system (E). The body weight of elver was 18.80 ± 0.62 g which derived from fish cultivator in Bogor, West Java. Fish was fed 3 times per day at satiation with commercial feed which a protein content of 50%. Results showed that treatment C was the best result with survival rate of 100%, the specific growth rate of 0.45% day -1, the absolute growth rate of 0.07 g day 1 and feed conversion ratio of 6.57. The analysis of variance showed that the treatments showed the significant effect (P <0.05). The blood glucose value closest to the eel condition before treatment was found in the treatment C.

Indonesian leaf fish (Pristolepisgrootii), is Indonesia endogenous fish species. This species is native in open-freshwater on the islands of Sumatra and Kalimantan.The purpose of this paper is to determine the aspects of bioecology, processed fish products and disseminating information related to Indonesian leaf fish.Data collection methods through surveys, laboratory observations and literature studies.The data collected consists of primary data and secondary data.The results of observations and analysis showed that the Indonesian leaf fish are near families to climbing perch fish (Anabas testudineus), gouramy (Osphronemusgoramy), kissinggouramy fish (Helostomatemminckii).Local names are diverse, the national name of the sepatung fish and the international name are Indonesian leaf fish.Indonesian leaf fish habitat in fresh water. This fish is an omnivore, euryphagic.The morphological differences of male and female fish are not clear, sexual dimorphism is not apparent.Sex ratio in the wild in a balanced condition.Indonesian leaf fish spawn season at the rainy season. This fish can be processed into a variety of menu, and can be preserved by salted, fogged and fermented.Indonesian leaf fish has biological superiority and economic value, so it is worthy of being a candidate for aquaculture commodity.Keywords: bioecology, Indonesian leaf fish, sepatung fish, native Indonesian fish, Pristolepisgrootii AbstrakIkan sepatung (Pristolepisgrootii), merupakan salah satu jenis ikan endogenous Indonesia. Ikan ini native di perairan umum air tawar di pulau Sumatera dan Kalimantan. Tujuan penulisan ini adalah untuk mengetahui aspek bioekologi, harga, produk olahan ikan sepatung dan menyebarluaskan informasi yang terkait dengan ikan sepatung. Metode pengumpulan data melalui survey, pengamatan laboratorium dan studi literatur. Data yang dikumpulkan terdiri data primer dan data sekunder. Dari hasil pengamatan dan analisa, ikan sepatung berkerabat dengan ikan betok (Anabas testudineus), ikan gurami (Osphronemusgoramy), ikan tembakang (Helostoma temminckii). Nama lokalnya beragam, nama nasional ikan sepatung dan nama internasionalnyaIndonesian leaf fish. Habitat hidup ikan sepatung di air tawar. Ikan ini termasuk jenis ikan omnivore, bersifat euryphagic. Perbedaan morfologi ikan jantan dan betina tidak jelas, dimorfisme seksual tidak tampak. Sex ratio ikan sepatung di alam bebas dalam kondisi seimbang. Ikan sepatungmemijah pada awal musim penghujan. Ikan ini dapat diolah menjadi berbagai menu masakan, dan dapat diawetkan dengan penggaraman, pengasapan dan fermentasi. Ikan sepatung memiliki keunggulan biologi dan bernilai ekonomi, sehingga layak menjadi kandidat komoditi budidaya perikanan. Kata kunci:bioekologi, Indonesia leaf fish, ikan sepatung, ikan asli Indonesia, Pristolepisgrootii,

This research explains the interconnectedness of physical and chemical conditions of the Gulf waters saleh in site selection for grouper fish farming. Site selection activities in fish farming at sea constitute an obligatory thing to do because of the good location will determine the success of fish farming. The data used for multivariate analysis and the method of primary data is storet direct measurement results (in-situ) sea water quality is Saleh Bay, Sumbawa district Nusa Tenggara Barat were taken on July 8-10 in 2012 at several stations. Analysis of water quality were conducted in a laboratory Environment IPB. Water sampling station parameters of Chemical Physics waters performed on five stations: station 1 taken on coastal areas; Station 2 is taken on the middle of the waters; Station 3 taken at the Mouth of the Bay area 1; station 4 taken on the Mouth of the Bay area 2; station 5 taken in outdoor areas. Based on the results of the analysis of the Storet against physical parameters of chemical and heavy metal waters Saleh Bay, Sumabawa obtained the value of final score totaled-30, this value indicates that the waters of the Gulf of Pious Sumbawa are on the status light polluted (Grade C). This calculation is calculation of the total for all stations, this was desebabkan sampling only do as much as one time. Parameters give the value of the score is negative physical parameters include temperature, chemical parameters i.e., i.e. the parameters of phosphate (PO4) and Total Organic Matter (TOM). From the results of the analysis of PCA looks there are two components that can represent the diversity of PC1 and PC2 total i.e., water quality parameters are dominant i.e. ammonia, nitrate, pb and temperature, in addition there are special characteristics in station 1 which is different with the other stations (score plot). There is a link between some physical chemical variables Saleh Bay waters of regression analysis. Seen that the relationship has the pb parameters very closely with other response i.e. ammonia, nitrate and temperature on the waters of Saleh Bay, with a value of R2 amounted to 96.6%.Keywords: grouper, PCA, Storet, Saleh Bay AbstrakPenelitian ini menjelaskan keterkaitan kondisi fisika dan kimia perairan teluk saleh dalam pemilihan lokasi untuk budidaya ikan  kerapu. Pemilihan lokasi dalam kegiatan budidaya ikan di laut merupakan suatu hal yang wajib dilakukan karena lokasi yang baik akan menentukan keberhasilan budidaya ikan. Data yang digunakan untuk analisis multivariat dan metode storet merupakan data primer hasil pengukuran langsung (in-situ) kualitas air laut Teluk Saleh Kabupaten Sumbawa Nusa Tenggara Barat yang diambil pada tanggal 8-10 Juli Tahun 2012 di beberapa stasiun. Analisis kualitas air dilakukan di Laboratorium Lingkungan IPB. Stasiun pengambilan sampel air parameter fisika kimia perairan dilakukan pada lima stasiun yakni: Stasiun 1 diambil pada daerah pantai; Stasiun 2 diambil pada daerah tengah perairan; Stasiun 3 diambil pada daerah Mulut Teluk 1; Stasiun 4 diambil pada daerah Mulut Teluk 2; Stasiun 5 diambil pada daerah luar. Berdasarkan hasil analisis Storet terhadap parameter fisika kimia dan logam berat perairan Teluk Saleh Sumbawa didapatkan nilai skor akhir berjumlah -30, nilai ini mengindikasikan bahwa perairan Teluk Saleh Sumbawa berada pada status tercemar ringan (Kelas C). Perhitungan ini merupakan perhitungan total untuk semua stasiun, hal ini desebabkan pengambilan sampel hanya dilakukan sebanyak satu kali. Parameter-parameter yang memberikan nilai skor negatif meliputi parameter fisik yakni suhu, parameter kimia yaitu parameter fosfat (PO4) dan Total Organik Mater (TOM). Dari hasil analisis PCA terlihat terdapat dua komponen yang dapat mewakili keragaman total yakni PC1 dan PC2, parameter kualitas air dominan yakni  nitrat, amoniak, pb dan suhu, selain itu terdapat karateristik khusus di stasiun 1 yang berbeda dengan stasiun lainnya (score plot). Terdapat keterkaitan antara beberapa variabel fisika kimia perairan teluk Saleh analisis regresi. Terlihat bahwa parameter pb memiliki hubungan yang sangat erat dengan respon lain yakni amoniak, nitrat dan suhu pada perairan teluk Saleh dengan nilai R2 sebesar 96,6%.Kata kunci  :  Ikan kerapu, PCA, Storet, Teluk Saleh

Research on the Anguilla bicolor bicolor McClelland, 1844 eels has been widely proposed, but study related to air oxygen uptake through gills and skin for A. bicolor bicolor has not been found. This information is very important in the development of future cultivation technology. This study aims to analyze the oxygen uptake of A. bicolor bicolor through gills and skin, blood biochemistry, blood image and histology to air exposure. Eels were exposed to air for one hour (A), two hours (B) and three hours (C), and eels in the water were used as control. A total of 66 fish (77.68±1.54 g) of eels were imported from Bogor City, Indonesia. Oxygen uptake from the air through the gills and skin reduced with longer exposure time. After 3 hours of exposure time, the percentage of oxygen uptake through the gills decreased from 64.52% to 54.29% and the percentage of oxygen uptake through the skin increased from 35.48% to 45.71%. Eels use different proportions of their gills and skin together when exposed to air. Air exposure affected the blood biochemistry values, blood image and showed the highest values on air exposure for 3 hours.

Catfish (Clarias gariepinus Burchell, 1822) is a type of freshwater fish that is prospectively cultivated. This study aims to analyze the production performance and economic analysis of catfish on aquaponics technology with floating raft systems. This research was conducted descriptively with two treatments and four replications. The treatments included fish sizes, which were 6-9 cm (A) and 3-4 cm (B). The fish used were fish with an initial weight of 7.13±1.30 g and 4.11±0.43 g, the plant used was water spinach (Ipomoea reptans poir) with an initial height of 8-10 cm. The results showed that there was a trend of increasing fish weight during the study from 7.13±1.30 g and 4.11±0.43 g to 110.02±6.09 g and 86.44±5.00 g at the end of the study. . The survival rate value during the study was 100% for all treatments, the feed conversion value ranged from 1.48-1.59. The highest specific weight growth rate was 1.60%/day. Water spinach production during catfish rearing can be done for 3 harvests. The analysis of the aquaponics business of the floating raft system is very efficient and profitable. The value of R/C ratio > 1 in all treatments means that the cultivation business is said to be feasible. Payback period of 0.57 years (A) and 0.19 years (B), the fastest return on investment is in treatment B. Aquaponics floating raft system with catfish stocking size 3-4 cm for 60 days of maintenance period provides the best production performance with SR value was 60.78%, specific weight growth rate was 0.051%/day, feed conversion was 1.18 and the best kale production was 75 kg. Economically, this research is feasible to do.

African catfish is a commodity that has prospective market and economic value. Grow out techniques are relatively simple allowing implementation of this technique on swamp land with high productivity. This study aimed to give specific information about fish productivity and its economic analysis. The study was conducted from May to August 2016 in the Pudak Village, District of Muara Kumpeh Muara Jambi. Sangkuriang fry from BPBAT Sungai Gelam with an average length of 2.3-2.7 cm and weight of 0.150-0.1725 gram were reared for 90 days using in 200×300×150 cm3 hapa nets with a density of 250 fish/m2. Fry were fed at satiation three times daily (08.00; 17.00; 21.00) with commercial pellet feed (CP 32-35%). Productivity offish reared by farmers in this swamp area show good result with survival rate, specific growth rate, feed conversion, and the coefficient of variationis 93.78%; 7.75%; 1.03; and 0.02 respectively. Average weight of fish catfish in each sampling during rearing period is 0.0150 g, 60.067 g, 101.233 and 124.567 gr. Value of R/C, breakeven point (BEP), BEP in volume is 1.46, Rp4,121,656.371 and 94.97 kg/cage respectively with production cost per kg is Rp. 10,968. Keywords: African catfish, grow out, productivity AbstrakIkan lele termasuk komoditas yang memiliki peluang pasar yang prospektif dan bernilai ekonomis tinggi. Aplikasi teknik pembesaran yang relative sederhana memungkinkan penerapan teknologi pembesaran pada lahan rawa dengan produktivitas yang tinggi. Penelitian ini bertujuan untuk Informasi spesifik kinerja produksi pembesaran ikan lele sangkuriang dan análisis ekonomi dalam usaha budidaya tersebut. Penelitian ini dilaksanakan pada bulan Mei-Agustus 2016 di Desa Pudak Kecamatan Muaro Kumpeh Kabupaten Muara Jambi Provinsi Jambi. Ikan yang digunakan dalam penelitian ini adalah benih lele Sangkuriang dengan panjang rata-rata 2,3-2,7 cm dan bobot rata-rata 0,150-0,1725 gram, berasal dari pemijahan induk BPBAT Sungai Gelam. Pemeliharaan benih lele sangkuriang menggunakan wadah hapa berukuran 200 cm x 300 cm x 150 cm. Pemeliharaan dilakukan selama 90 hari. Benih dipelihara dengan kepadatan 250 ekor/m2. Pakan yang diberikan berupa pelet komersil kadar protein pakan 32-35%, pemberian pakan dilakukan 3 kali dalam sehari yaitu pukul 08.00, pukul 17.00, dan pukul 21.00 dengan cara ad satiation (sekenyangnya). Kinerja produksi Ikan Lele Sangkuriang (Clarias gariepinus var sangkuriang) yang dipeliharan oleh pembudidaya di daerah penelitian pada daerah rawa menunjukkan hasil yang baik untuk kategori budidaya pembesaran ikan, nilai derajat kelangsungan hidup, laju pertumbuhan spesifik, konversi pakan, dan koefisien keragaman masing-masing sebesar 93,78% ; 7,75%; 1,03; dan 0.02. Pada akhir pemeliharaan bobot rata-rata ikan lele sangkuriang selama empat kali periode sampling masing masing sebesar 0,0150 gr, 60,067 gr, 101,233 gr dan 124,567 gr. Nilai R/C sebesar 1,46, Break even point (BEP) pada usaha pembesaran ikan lele sangkuriang di Desa Pudak ini sebesar Rp 4.121.656,371, BEP berdasarkan volum penjualan dalam bentuk ekor diperoleh nilai BEP sebesar 94.97 kg/karamba, Harga pokok penjualan  yaitu Rp 10,968/kg.Kata kunci  :  Ikan lele sangkuriang, Kinerja produksi, Pembesaran ikan, Pertumbuhan