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All Journal Journal of Marine and Aquatic Sciences Ecotrophic, Journal of Environmental Science BERITA BIOLOGI Jurnal Sumberdaya Akuatik Indopasifik Jurnal Perikanan Universitas Gadjah Mada Indonesian Fisheries Research Journal Bawal : Widya Riset Perikanan Tangkap Current Trends in Aquatic Science Journal of Marine Research and Technology Jurnal Iktiologi Indonesia (Indonesian Journal of Ichthyology) Advances in Tropical Biodiversity and Environmental Sciences SEAS (Sustainable Environment Agricultural Science) INTERNATIONAL JOURNAL OF ECONOMIC LITERATURE
Nyoman Dati Pertami
Manajemen Sumberdaya Perairan, Fakultas Kelautan Dan Perikanan, Universitas Udayana
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Earth & Planetary Sciences Economics, Econometrics & Finance Environmental Science Immunology & microbiology Veterinary Other

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Profil Nitrat dan Fosfat pada Air secara Vertikal di Danau Batur, Bali Ima Yudha Perwira; Nyoman Dati Pertami; Devi Ulinuha; Farhan Danu Fauzan
Journal of Marine and Aquatic Sciences Vol 7 No 1 (2021)
Publisher : Fakultas Kelautan dan Perikanan Universitas Udayana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24843/jmas.2021.v07.i01.p04

Abstract

The aimed of this study was to determine the reproductive biology aspects of longtail tuna, namely the gonad maturity level, gonadal maturity index, fecundity and length of first maturity. Fish samples were obtained from the catches of fishermen in the Bali Strait which landed at PPP Muncar from December 2018 to February 2019. Gonad maturity level of longtail tuna in December 2018 was mostly found in immature conditions (TKG I). TKG III and IV are most commonly found in February. The highest IKG value was found in February 2019 (0.017). This can be interpreted that lontail tuna experienced peak spawning and was actively reproducing in February. The sex ratio of gray tuna is dominated by male. Fecundity at TKG III ranged from 18,800 to 33,200 grains and at TKG IV of 154,000 grains. The length of first maturity of longtail tuna was 495 mmFL (male) and was 487 mmFL (female).
STUDY ON THE VERTICAL DISTRIBUTION OF CHLOROPHYLL IN COASTAL OCEAN; DEVELOPMENT OF VERTICAL MODEL FUNCTION AT WESTERN SUMBAWA SEA Nyoman Dati Pertami; Susumu Kanno; I Wayan Arthana
ECOTROPHIC : Jurnal Ilmu Lingkungan (Journal of Environmental Science) Vol 1 No 2
Publisher : Master Program of Environmental Science, Postgraduate Program of Udayana University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (695.12 KB)

Abstract

The primary production quantity depends on the vertical distribution of chlorophyll concentration inthe water column. The chlorophyll maximum value not always observed near or at the sea surface, butsometimes lies deeper than bottom of the euphotic zone. In this case, the ocean color sensors cannot measurethe chlorophyll maximum value. Vertical distribution of chlorophyll modeled and calculated withdevelopment of Vertical Model Function (VMF) by “Gaussian function”.This research has been carried out in western area of Sumbawa Sea. There were 178 stations of fieldobservations. The data were collected at each 0.5 m depth up to 200 m sea depth. Results processing ofprimary data, with correlations between chlorophyll concentration and depth in every station can show typesof vertical distribution of chlorophyll in all stations. There are five types of vertical distribution ofchlorophyll at Western Sumbawa Sea. The” five types” then classified into two main groups namely areLinear (L) type and Gaussian (G) type. Finally, data were processed to obtained one especially type that is“one type”. The regression analysis was carried out on the parameters in the Gaussian Function, BO, S, h, ?and Zmax for the each type of the vertical distribution of chlorophyll concentration.Vertical distribution of chlorophyll found at Western Sumbawa Sea are Linear (L) type, Linearsurface (LS) type, Gaussian (G) type, Gaussian with maximum surface (GS) type, and Linear with maximumsurface (LMS) type, where with “five types” have nine coefficient determinants (R) which below than 0,25.The regression analysis were modified from “five types” into “two types” and the result was two coefficientdeterminants (R) that below than 0,25. Correlation coefficient with “one type” have better result than theother types which has only one coefficient determinant (R) that below than 0,25.
ASPEK BIOLOGIS IKAN EKOR PEDANG (Xiphophorus hellerii HECKEL, 1848) DI CATUR DANAU BALI I Nyoman Yoga Parawangsa; Prawira Atmaja Rintar Pandapotan Tampubolon; Nyoman Dati Pertami
BERITA BIOLOGI Vol 20, No 1 (2021)
Publisher : Research Center for Biology-Indonesian Institute of Sciences

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14203/beritabiologi.v20i1.3864

Abstract

Ikan ekor pedang (Xiphophorus hellerii) merupakan jenis ikan asing yang mendiami catur danau Bali (Danau Tamblingan, Danau Buyan, Danau Bratan dan Danau Batur). Tujuan penelitian ini adalah untuk mengungkapkan nisbah kelamin, pola pertumbuhan dan kondisi ikan ekor pedang di catur danau Bali. Nisbah kelamin ikan ekor pedang di keempat danau berada dalam keadaan tidak seimbang. Proporsi ikan jantan di Danau Tamblingan, Danau Beratan dan Danau Batur lebih banyak daripada ikan betina dan kondisi sebaliknya ditemukan di Danau Buyan. Pola pertumbuhan ikan jantan di catur danau Bali adalah alometrik negatif dan ikan betina menunjukkan pola pertumbuhan alometrik negatif di Danau Tamblingan dan Danau Beratan dan pola pertumbuhan isometrik di Danau Buyan dan Danau Batur. Spesies ikan ini berada dalam kondisi baik di catur danau Bali dengan nilai faktor kondisi berkisar antara 0,47–1,54 dengan rerata 0,92 untuk ikan jantan dan 0,43–2,94 dengan rerata 1,12 untuk ikan betina. 
Morphoregression and length-weight relationship of Bali sardinella, Sardinella lemuru Bleeker 1853 in Bali Strait Waters Nyoman Dati Pertami; M.F. Rahardjo; Ario Damar; I.W. Nurjaya
Jurnal Iktiologi Indonesia Vol 18 No 3 (2018): October 2018
Publisher : Masyarakat Iktiologi Indonesia (Indonesian Ichthyological Society)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32491/jii.v18i3.425

Abstract

Bali Sardinella, Sardinella lemuru Bleeker 1853, included in small pelagic groups which have an important economic value. The production of Bali Sardinella was the highest among the other small pelagic fish in Bali Strait waters. The morphoregression and length-weight relationship are important to be known to facilitate the conversion between a length measurement to another type of length measurement and the weight. The aims of this research were to reveal the relationship between total length (TL) and standard length (SL), total length and fork length (FL), fork length and standard length, and the length-weight. The research was held in Bali Strait waters from March 2017 – Mei 2018. The morphoregression was analyzed using simple linear regression, whereas the length-weight relationship using power regression. A total of 470 individuals of Bali sardinella were collected during the study period. The fish that analyzed have a length range 9.7 –20.2 cm TL. The average length of Bali sardinella was13.7 cm. The relationship between total length (TL) and standard length (SL); total length (TL) and fork length (FL); fork length (FL) and standard length (SL) for Bali sardinella respectively were TL = 1.1038SL + 0.9313; TL = 1.0861FL + 0.2967; and FL = 1.0068SL + 0.6936, respectively. The value of b which were generated from the length-weight relationship of Bali Sardinella was 3.22 with the growth patterns were positive allometric. Abstrak Ikan lemuru, Sardinella lemuru Bleeker 1853, termasuk dalam kelompok ikan pelagis kecil yang bernilai ekonomis tinggi. Dibandingkan dengan jenis pelagis kecil lainnya, hasil tangkapan ikan lemuru lebih dominan di perairan Selat Bali. Persamaan morforegresi dan hubungan panjang bobot penting untuk diketahui sehingga mudah melakukan kon-versi dari satu jenis panjang ke jenis panjang lain dan bobotnya. Penelitian ini bertujuan untuk mengungkap hubungan antara panjang total (PT) dengan panjang baku (PB), panjang total dengan panjang cagak (PC), panjang cagak dengan panjang baku, serta hubungan panjang bobot ikan lemuru. Penelitian dilaksanakan di perairan Selat Bali kurun waktu Maret 2017 – Mei 2018. Morforegresi dianalisis menggunakan regresi linear sederhana, sedangkan hubungan panjang bobot dianalisis menggunakan regresi power. Ikan lemuru (Sardinella lemuru Bleeker 1853) yang dikumpulkan selama penelitian berjumlah 470 ekor. Ikan yang dianalisis memiliki kisaran panjang antara 9,7 – 20,2 cm PT. Panjang rata-rata ikan lemuru adalah 13,7 cm. Hubungan antara panjang total (PT) dan panjang baku (PB); panjang total (PT) dan pan-jang cagak (PC); panjang cagak (PC) dan panjang baku (PB) ikan lemuru secara berturut-turut adalah PT = 1,1038 PB + 0,9313; PT = 1,0861 PC + 0,2967; and PC = 1,0068 PB + 0,6936. Nilai b yang terbentuk pada hubungan panjang bobot ikan lemuru adalah 3,22 dengan pola pertumbuhan adalah allometrik positif.
Food and feeding habit of Bali Sardinella, Sardinella lemuru Bleeker, 1853 in Bali Strait waters Nyoman Dati Pertami; M.F. Rahardjo; Ario Damar; I.W. Nurjaya
Jurnal Iktiologi Indonesia Vol 19 No 1 (2019): February 2019
Publisher : Masyarakat Iktiologi Indonesia (Indonesian Ichthyological Society)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32491/jii.v19i1.444

Abstract

Bali Sardinella (Sardinella lemuru Bleeker, 1853) was the main catch for fishermen around the Bali Strait waters. The unwell management of the catch effort and the unavailable of allowable catch size were suspected as the factors which made this fish became rare to find in Bali Strait nowadays. In addition, environmental factors were also thought to play a role, for example, the availability of food. This study aimed to reveal the food and feeding habit of Bali Sardinella in Bali Strait waters and their connectivity to the availability of natural food in nature. This study was held for 13 months, from May 2017-May 2018 in three areas of the Bali Strait waters, namely Pengambengan, Pekutatan, and Yeh Leh. Organisms found in the digestive tract of fish were identified until the genera level. The method used for feeding habit was the Important of Relative Index (IRI). Meanwhile, for determining the electivity of the food using the Index of Electivity. Based on the IPR, the food organisms with the highest value were Cyanophyceae (Trichodesmium) and Bacillariophyceae (Nitzshia and Chaetoceros). The main food varied depending on the season and fish size. Bali Sardinella were planktivorous and chose their food. Plankton which is abundant in the waters was not always found in large quantities in the digestive tract. Abstrak Ikan lemuru (Sardinella lemuru Bleeker, 1853) adalah salah satu tangkapan utama nelayan di sekitar Selat Bali. Beberapa faktor yang disinyalir menjadi penyebab turunnya produksi ikan ini adalah upaya tangkap yang tidak terkelola baik pada masa lalu dan belum adanya batas ukuran yang boleh ditangkap. Selain faktor penangkapan tersebut, faktor lingkungan juga diduga berperan, misalnya ketersediaan makanannya. Penelitian ini bertujuan untuk mengungkapkan makanan dan kebiasaan makan ikan lemuru di perairan Selat Bali dan keterkaitannya dengan ketersediaan pakan alaminya di alam. Penelitian berlangsung selama 13 bulan, sejak Mei 2017-Mei 2018 di tiga area di perairan selat Bali, yaitu Pengambengan, Pekutatan, dan Yeh Leh. Organisme yang ditemukan di dalam saluran pencernaan ikan diidentifikasi hingga tingkat genera. Untuk kebiasaan makanan ikan, metode yang digunakan adalah Indeks Penting Relatif (IPR). Sementara itu, metode yang digunakan untuk menentukan makanan yang dipilih ikan adalah Indeks Pilihan Jenis Makanan. Berdasarkan nilai IPR, organisme makanan yang nilainya paling tinggi adalah dari kelas Cyanophyceae (Trichodesmium) dan Bacillariophyceae (Nitzshia dan Chaetoceros). Organisme yang paling banyak dimakan berubah-ubah bergantung kepada musim dan ukuran ikan. Lemuru adalah ikan planktivora dan memilih makanannya. Plankton yang melimpah di perairan belum tentu ditemukan dalam jumlah yang banyak dalam saluran pencernaannya.
Length-weight relationship, condition factor, and distribution of spotted barb (Barbodes binotatus Valenciennes, 1842) in Lake Tamblingan Bali Nyoman Dati Pertami; I Nyoman Yoga Parawangsa
Jurnal Iktiologi Indonesia Vol 21 No 2 (2021): June 2021
Publisher : Masyarakat Iktiologi Indonesia (Indonesian Ichthyological Society)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32491/jii.v21i2.577

Abstract

Tamblingan Lake is a volcanic lake located in the caldera of Mount Lesung a rain-fed lake in a confined endorheic basin and there is no inflow or outflow. Nyalian is a type of fish from the Cyprinidae family that is quite common compared to other fish in its class in Tamblingan Lake. Information on the growth and distribution of these fish parameters in Tamblingan Lake does not exist. This study aims to analyze and explain the growth patterns of Barbodes binotatus, especially the length-weight relationship, condition factor, and their distribution in the waters of Tamblingan Lake. The research was conducted in Tamblingan Lake from January to June 2019 using a modify gill nets with the mesh size 0.5; 1.0; 1.5; 2.0; 2.5; 3.0 in centimeter. The sampling done in five locations. The length-weight relationship analysis used the power regression. The fish sample found was 204 individuals during the study with a range of total length was 5.2 – 15.0 cm. The equation of length-weight relationship is W = 0.0051 L3.387. The value of b formed based on this equation is 3.387 with a positive allometric growth pattern.The condition factor values ranged from 0.587 to 1.246. Barbodes binotatus spread in the litoral area where there are many aquatic plants. This information of nyalian fish could use as the basis for fish resource management in Tamblingan Lake. Abstrak Danau Tamblingan adalah sebuah danau bentukan vulkanisme terletak di kaldera Gunung Lesung dan merupakan danau tadah hujan yang berada di dalam sebuah cekungan endorheic yang terkurung, serta tidak terdapat aliran masuk ataupun aliran keluar danau yang jelas. Nyalian merupakan jenis ikan Famili Cyprinidae yang cukup banyak ditemukan dibandingkan dengan jenis ikan lain di kelasnya di Danau Tamblingan. Informasi parameter pertumbuhan dan persebaran ikan ini di Danau Tamblingan tidak ada. Penelitian ini bertujuan untuk menganalisis dan menjelaskan pola pertumbuhan Barbodes binotatus khususnya hubungan panjang bobot dan faktor kondisi serta persebarannya di perairan Danau Tamblingan. Penelitian dilakukan di Danau Tamblingan kurun waktu Januari – Juni 2019 dengan menggunakan jaring insang yang dimodifikasi dengan ukuran mata jaring 0,5; 1,0; 1,5; 2,0; 2,5; 3,0 cm. Penangkapan ikan dilakukan di lima lokasi. Hubungan panjang bobot dianalisis menggunakan regresi power. Ikan yang ditemukan selama penelitian sebanyak 204 ekor dengan kisaran panjang total 5,2 – 15,0 cm. Persamaan hubungan panjang-bobot ikan adalah W = 0,0051 L3,387. Nilai b yang terbentuk berdasarkan rumus tersebut adalah 3,387 dengan pola pertumbuhan allometrik positif. Nilai faktor kondisi berkisar antara 0,587 – 1,246. Barbodes binotatus menyebar di daerah litoral danau yang banyak tumbuhan air. Informasi terkait ikan nyalian ini dapat digunakan sebagai salah satu dasar dalam pengelolaan sumber daya ikan di Danau Tamblingan.
Aspek Reproduksi Ikan Nyalian (Barbodes binotatus Valenciennes, 1842) di Danau Tamblingan Ni Made Sita Aditya Putri; Nyoman Dati Pertami; Gde Raka Angga Kartika
Jurnal Sumberdaya Akuatik Indopasifik Vol 5 No 3 (2021): Agustus
Publisher : Fakultas Perikanan dan Ilmu Kelautan, Universitas Papua

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.46252/jsai-fpik-unipa.2021.Vol.5.No.3.159

Abstract

The reproduction aspects of spotted barb (Barbodes binotatus Valenciennes, 1842) in Tamblingan Lake are not yet known, so that efforts to manage the resources of this fish cannot be carried out. This study aims to determine the reproduction aspects of spotted barb in Tamblingan Lake. Sampling was conducted from January to June 2019. This research used descriptive and quantitative methods. Purposive sampling method used for catched the spotted barb at five stations. Sampling was done once in a month. The fish were collected used gill net with a mesh size of 0.5; 1.0; 1.5; 2.0; 2.5; 3.0 cm. The samples of spotted barb that found during data collection were 208 individuals. The results showed that the ratio between the sex ratio of male and female spotted barb was 1.17: 1 which indicates a balanced sex ratio, with the gonad maturity stage of male fish more varied (I-IV) than female fish (III and IV). The highest average gonadosomatic index (male and female) was found in March and the lowest in January. The fecundity ranges from 57-23,897 eggs.
MORPHOREGRESSION AND FIRST SIZE AT MATURITY OF GOLDSTRIPE SARDINELLA (SARDINELLA GIBBOSA) FROM BALI STRAIT WATERS Prawira A. R. P. Tampubolon; Nyoman Dati Pertami; Arief Wujdi
Indonesian Fisheries Research Journal Vol 27, No 1 (2021): (June) 2021
Publisher : Research Center for Fisheries

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15578/ifrj.27.1.2021.17-26

Abstract

Bali Strait was one of the highest density areas for small pelagic fish in Indonesian Fisheries Management Area (FMA)-573 with goldstripe sardinella (Sardinella gibbosa) as was one of the abundant species in the catch. The aims of this study were to reveal the morphoregression characteristics and the first size of maturity for Sardinella gibbosa in Bali Strait waters. A total of 1.282 goldstripe sardinella were measured in total length (TL), fork length (FL), and standard length (SL)) and weighed during the study. All of the length measurement methods were highly related to the weight, which were W = 4 x 10-6 TL3,1686 (R² = 0,9817); W = 4 x 10-6 FL3,2334 (R² = 0,9732); and W = 1 x 10-5 SL3,0239 (R² = 0,9656), respectively. Among all the measurement methods, total length estimated the weight more accurately than the others. The growth pattern of goldstripe sardinella in this study were various based on the measurement method, sex, and the maturity level of the fish. A total of 800 individuals were dissected and their gonads examined. The sex was identified by visual characteristics. The size at 50% maturity for goldstripe sardinella in Bali Strait was 148 mm TL for male and 155 mm TL for female. Most of the caught fish were under the size at 50% maturity.
KARAKTER PANJANG, HUBUNGAN PANJANG-BOBOT DAN KONDISI IKAN NYALIAN BULUH (Rasbora argyrotaenia BLEEKER, 1849) DI CATUR DANU BALI I Nyoman Yoga Parawangsa; Prawira Atmaja Rintar Pandapotan Tampubolon; Nyoman Dati Pertami
BAWAL Widya Riset Perikanan Tangkap Vol 13, No 1 (2021): (April) 2021
Publisher : Pusat Riset Perikanan, BRSDM KP.

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15578/bawal.13.1.2021.45-55

Abstract

Ikan nyalian buluh (Rasbora argyrotaenia) merupakan spesies ikan yang menyebar di catur danu Bali. Penelitian karakter biologi spesies ikan ini di catur danu Bali masih terbatas. Penelitian ini dilakukan dari Agustus 2017 sampai Juli 2018 dengan tujuan untuk memperoleh hubungan karakter panjang, hubungan panjang-bobot dan dugaan kondisi ikan nyalian buluh di catur danu Bali. Sampling dilakukan dengan metode purposive sampling yang dilakukan secara bergantian setiap bulannya. Hasil menunjukkan hubungan karakter panjang ikan nyalian buluh di catur danu Bali memiliki korelasi kuat untuk tiap tipe pengukuran (R>0,96). Persamaan hubungan panjang-panjang ikan nyalian buluh di Danu Tamblingan, PC = 1,1217PB - 0,9947; PT = 1,1759PB + 3,657; PT = 1,0525PC + 4,5435, di Danu Buyan, PC = 1,091PB + 1,7375; PT = 1,1785PB + 3,029; PT = 1,0742PC + 1,5009, di Danu Beratan, PC = 1,091PB + 2,7818; PT = 1,178PB + 4,8692; PT = 1,0751PC + 2,2718 dan di Danu Batur, PC = 1,105PB + 1,7529; PT = 1,2051PB + 3,3616; PT = 1,0863PC + 1,8183. Ukuran panjang baku (PB) menjadi penduga bobot paling akurat ikan nyalian buluh di catur danu Bali. Pola pertumbuhan panjang-bobot bersifat alometrik positif dan isometrik, serta masih berada dalam kondisi baik dengan nilai faktor kondisi relatif antara 0,62-1,40.Silver rasbora (Rasbora argyrotaenia) is a fish species that inhabits in four lakes in Bali. Research related to biological character for this species is limited in four lakes in Bali. This research was conducted from August 2017 to July 2018 withthe aims of this research was to revealcharacteristic of length, length-weight relationship and condition of silver rasbora in four lakes in Bali. Sampling method is purposive sampling which did alternately every month. The result shown, length-length relationship of silver rasbora in four lakes in Bali has strong correlation (R>0.96) for each measurement method. The equation of length-length relationship silver rasbora in Tamblingan Lake, FL = 1.1217SL - 0.9947; TL = 1.1759SL + 3.657; TL = 1.0525FL + 4.5435, in Buyan Lake, FL = 1.091SL + 1.7375; TL = 1.1785SL + 3.029; TL = 1.0742FL + 1.5009, in Beratan Lake, FL = 1.091SL + 2.7818; TL = 1.178SL + 4.8692; TL = 1.0751FL + 2.2718 andin Batur Lake, FL = 1.105SL + 1.7529; TL = 1.2051SL + 3.3616; TL = 1.0863FL + 1.8183.The standard length (SL) is the most accurate measure in estimating the weight for silver rasbora in four lakes in Bali. The growth patterns of silver rasbora are positive allometric and isometric, andstill in good condition with a relative condition factor value ranging between 0.62-1.40.
KARAKTER MORFOMETRIK DAN MERISTIK IKAN EKOR PEDANG (Xiphophorus helleri Heckel, 1848) DI DANAU BUYAN, BULELENG, BALI I Nyoman Yoga Parawangsa; Prawira A. R. P Tampubolon; Nyoman Dati Pertami
BAWAL Widya Riset Perikanan Tangkap Vol 11, No 2 (2019): (Agustus) 2019
Publisher : Pusat Riset Perikanan, BRSDM KP.

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (338.699 KB) | DOI: 10.15578/bawal.11.2.2019.103-111

Abstract

Ikan ekor pedang bukan merupakan ikan asli Indonesia. Ikan ini berasal dari Amerika Tengah dan dilaporkan menyebabkan kerugian di beberapa perairan yang dihuninya. Ikan ekor pedang merupakan ikan kedua yang paling banyak tertangkap di Danau Buyan. Penelitian ini bertujuan untuk mengungkap karakter morfometrik dan meristik, hubungan panjang bobot dan hubungan panjang total-panjang baku pada dua varian ikan ekor pedang di Danau Buyan yang memiliki warna tubuh yang berbeda. Penelitian dilakukan pada bulan Januari sampai April 2018. Ikan yang diamati berjumlah 160 ekor. Pengamatan meliputi pengukuran 12 karakter morfometrik tradisional, 14 karakter truss morphometric, penghitungan empat karakter meristik, dan penimbangan bobot. Panjang total ikan ekor pedang jantan dan betina pada varian I adalah 43,94 - 79,47 mm dan 43,81 - 115,80 mm dengan nilai b= 2,90 dan b= 2,98. Kemudian, panjang total ikan ekor pedang pada varian II adalah 45,76 - 83,91 mm untuk ikan jantan dan 41,43 - 88,49 mm untuk ikan betina dengan nilai b= 2,80 dan b= 3,07. Karakter meristik pada kedua varian ikan ekor pedang baik jantan dan betina adalah D. 12-13 ; A. 8 - 9. Hubungan panjang bobot ikan ekor pedang pada kedua varian menunjukan pertumbuhan isometrik. Berdasarkan pengamatan dalam penelitian ini, diketahui tidak terdapat perbedaan pada dua varian ikan ekor pedang di Danau Buyan.Green swordtail is not originally from Indonesia, but from Central America. This fish was reported harmful in some freshwater ecosystem. Green swordtail was the second most caught fish in Buyan Lake. The aims of this research were to reveal morphometric and meristic characters, length-weight relationship and total length-standard length relationship on two variants of green swordtail with the different color in Buyan Lake. This research was conducted from January to April 2018 in Buyan Lake. The number of measured and weighed fish were 160 individuals. There were 12 traditional morphometric characters, 14 truss morphometric characters, and four meristic characters observed. Respectively, the total length for green swordtail variant I male and female were 43.94 - 79.47 mm and 43.81 - 115.80 mm. The b value for both of the variant I were 2.90 and 2.98. For the variant II, the total length was 45.76 - 83.91 mm for male fish and 41.43 - 88.49 for female. The b value for variant II were 2.80 and 3.07 for male and female respectively. Meristic characters for all variant and sex was D 12 - 13; A 8 - 9. The growth pattern was isometric. There is no difference in the body shape between the variant of green swordtail fish.
Co-Authors Angel Maria Arief Arief Wujdi Ario Damar Atanasius Jenarut Ayu Padma Sari Ayu Putu Wiweka Krisna Dewi Devi Ulinuha Farhan Danu Fauzan Franceska Kendra Rossa S Gabrielle Aisya Gde Raka Angga Kartika Ghina Nafis Rahmatullah I Ketut Wija Negara I Nyoman Y Parawangsa I Nyoman Yoga Parawangsa I Nyoman Yoga Parawangsa I Nyoman Yoga Parawangsa I Nyoman Yoga Parawangsa I Nyoman Yoga Parawangsa I Wayan Arthana I.W. Nurjaya Ima Yudha Perwira Indra Nur Cahyati M.F. Rahardjo M.F. Rahardjo Made Ayu Pratiwi Muhammad Bisma Ni Luh Kade Putri Purwaningsih Ni Made Ernawati, Ni Made Ni Made Sita Aditya Putri Ni Made Sita Aditya Putri Prawira A. R. P Tampubolon Prawira A. R. P. Tampubolon Prawira A.R.P. Tampubolon Prawira ARP Tampubolon Prawira Atmaja Rintar Pandapotan Tampubolon Prawira Atmaja Rintar Pandapotan Tampubolon Prawira Atmaja Tampubolon Putra, I Nyoman Giri Putu Tegar Wiguna Putra Riska Purwanto Shintani Asri Tinambunan Susumu Kanno