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Depik Jurnal Ilmu-Ilmu Perairan, Pesisir dan Perikanan
Published by Universitas Syiah Kuala
ISSN : 20897790     EISSN : 25026194     DOI : 10.13170/depik
Core Subject : Science, Education, Engineering,
Earth & Planetary Sciences Education Engineering
Depik Jurnal Ilmu-Ilmu Perairan, Pesisir dan Perikanan is a peer review international journal, this journal is publishing high-quality articles in aquatic sciences and fisheries in general. The aim of the journal is to publish and disseminate the current or new findings of the research, and give a significant contribution to the development of fisheries and aquatic sciences in several topics, but not limited to: Fisheries (Aquaculture, Capture Fisheries, Fish Processing) Aquatic Ecology (Freshwater, Marine, and Brackishwater) Aquatic Biology (Fish, Mollusk, Crustacean, Plankton, Coral reefs) Oceanography
Arjuna Subject : Ilmu Bumi dan Planet (semua kategori) - Oseanografi
Articles 944 Documents
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Studi pendahuluan klasifikasi ukuran butir sedimen di Danau Laut Tawar, Takengon, Kabupaten Aceh Tengah, Provinsi Aceh Ichsan Setiawan
Depik Vol 2, No 2 (2013): August 2013
Publisher : Faculty of Marine and Fisheries, Universitas Syiah Kuala

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.13170/depik.2.2.750

Abstract

Abstract. The purpose of this research was to examine the sediment grains size in Lake Laut Tawar. This research was done during Mei to June 2012. Five sampling stationse were determined  i.e. Toweran, Bintang, Klitu, Boom and Ujung Mumpar. Dry sieving analysis method was used in this study with different diameter stage sediment sieve  such as 4.75 mm, 1.7 mm, 250 µm,  850 µm, 150 µm, 0.2 µm, and 0.063 µm. The data was then weighed and calculated for percentages. The results showed that the sediment in Toweran station was dominated by pebble and medium sand; in Bintang station was dominated by pebble and coarse sand; in Klitu station was dominated by pebble and medium sand; in Boom station was dominated of colloid and remaining shells; and in Ujung Mumpar station was dominated of pebble and coarse sand. Generally, the sedimen type was pebble and coarse sand.Keywords: The dry sieving method; Stage sieve; Sediment grain size Abstrak. Penelitian ini bertujuan untuk mengetahui ukuran butir sedimen di Danau Laut Tawar. Penelitian berlangsung pada Bulan Mei sampai Juni 2012. Lokasi sampling terbagi menajdi beberapa stasiun;  Stasiun Toweran, Bintang, Klitu, Boom dan Ujung Mumpar. Sampel sedimen disaring dengan ayakan bertingkat dengan diameter  4,75 mm, 1,7 mm, 250 µm,  850 µm, 150 µm, 0,2 µm, 0,063 µm. Persentase berat fraksi sedimen dihitung berdasarkan saringan sedimen bertingkat. Hasil penelitian menunjukkan bahwa sedimen di Stasiun Toweran dominan kerakal dan batu yang diikuti pasir sedang, di Stasiun Bintang dominan kerakal dan batu yang diikuti pasir sangat kasar, di Stasiun Klitu dominan kerakal dan batu yang diikuti pasir sedang, di Stasiun Boom dominan koloid yang diikuti sisa kerang-kerangan dan di Stasiun Ujung Mumpar dominan kerakal dan batu yang diikuti pasir sangat kasar. Secara umum ukuran sedimen di Danau laut Tawar adalah kerakal dan pasir sangat kasar.Kata kunci : Metode ayak kering; Saringan bertingkat; Ukuran butir sedimen
Pengaruh suhu terhadap perkembangan embrio ikan Cupang Betta splendens Mustaqim Mustaqim; Kartini Eriani; Erlangga Erlangga; Rachmawati Rusyidi
Depik Vol 8, No 3 (2019): December 2019
Publisher : Faculty of Marine and Fisheries, Universitas Syiah Kuala

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.13170/depik.8.3.13916

Abstract

Abstract. Temperurate is one of the important parameter in the embryo development of fish; However, to date no information this effect on the Betta splendens. Hence, this study aims to determine the effect of temperature on egg hatchability and survival of betta fish larvae. Samples of betta fish used in this study are similar in size and from the same type of broodstock. A completely randomized design used with four treatments and three replications. The parameters observed were the process of egg development, fertilization rate, hatching rate, hatching duration, survival rate, and water quality (pH, DO, temperature). The results showed that the relation between temperature and fertilization rate was not significantly different, whereas the calculated F value (0.23) ˂ F table 0.05 (4.07). The relation between temperature and hatching rate has a very significant effect, F value (18.91) ˃ F table 0.05 (4.07). The relation of temperature to hatching time showed the same difference, and the relation of temperature to survival of betta fish (Betta spelendes) larvae is significant with F ¬ values (39.98) F table 0.05 (4.07). Water quality parameters during the study were pH 7 - 7.5, DO 5.0 - 7.7 ppm and temperature at 27 - 29 oC.Keywords: Betta fish eggs, temperature, embryogenesis Abstrak.  Suhu adalah salah satu faktor menentukak proses perkembangan embrio pada ikan, namun pengaruh ini belum pernah diamati pada ikan cupang Betta splendens. Oleh karena itu, penelitian ini bertujuan untuk mengetahui pengaruh suhu terhadap perkembangan embrio, daya tetas telur dan kelangsungan hidup larva ikan cupang. Induk ikan cupang yang digunakan memiliki ukuran yang sama dan dari induk jenis yang sama. Adapun rancangan yang digunakan dalam penelitian adalah rancangan acak non factorialdengan 4 perlakuan 3 kali ulangan. Parameter yang diamati adalah proses perkembangan telur, tingkat pembuahan telur, tingkat penetasan telur, lama penetasan telur, tingkat kelangsungan hidup dan kualitas air pH, DO, suhu ruangan. Hasil penelitian menunjukkan bahwa hubungan suhu terhadap tingkat pembuahan telur tidak berbedanyata, dimana nilai F hitung (0,23) ˂ F tabel 0,05 (4,07). Hubungan suhu terhadap tingkat penetasan telur berpengaruh sangat berbedanyata, dimana nilai F hitung (18,91) ˃ F tabel 0,05 (4,07). Hubungan suhu terhadap lama penetasan menunjukkan berbeda sama, dan hubungan suhu terhadap kelangsungan hidup berpengaruh nyata terhadap kelangsungan hidup larva ikan cupang (Betta spelendes) dengan nilai F hitung (39,98) F tabel 0,05 (4,07). Parameter kualitas air selama penelitian rata-rata pH 7 – 7,5, DO 5,0 – 7,7 ppm dan suhu ruangan 27 – 29 oC.Kata kunci: Telur ikan cupang, suhu, embriogenesis
Total nitrogen dan fosfat di perairan Teluk Doreri, Kabupaten Manokwari, Provinsi Papua Barat, Indonesia (Total nitrogen and phosphorus in the Doreri Bay, Manokwari Regency, West Papua Province, Indonesia) Alianto Alianto; Hendri Hendri; Suhaemi Suhaemi
Depik Vol 5, No 3 (2016): December 2016
Publisher : Faculty of Marine and Fisheries, Universitas Syiah Kuala

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.13170/depik.5.3.5670

Abstract

Total Nitrogen (TN) and Phosphate (TP) are the two bio-elements essential that determine the source of life in the waters, including marine waters. This study aims to determine the concentration of TN and TP in the Doreri Bay. The study was conducted from January to March 2012. The sampling of seawater in situ performed three times in the six research stations. Measurement of sea water samples also carried out ex-situ by using method persulphate and peroxidisulphate for each concentration of TN and TP. The measurement results obtained an average TN concentration ranging from 0.053 to 0.165 mg/L with a higher tendency at station 1, 2 and 5 respectively of 0.102 mg/L; 0.100 mg/L; and 0.165 mg/L. While TP concentrations ranged from 0.017 to 0.038 mg/L with a value equal concentrations tended at each station observations. The results showed the value of the concentration of TN tend to vary and TP relatively stable or not varies.Total Nitrogen (TN) dan Fosfat (TP) merupakan dua unsur bioelemen penting yang menentukan sumber kehidupan di perairan termasuk perairan laut. Penelitian ini bertujuan untuk mengetahui konsentrasi TN dan TP di perairan Teluk Doreri. Penelitian dilaksanakan pada Januari 2012 sampai Maret 2012. Pengambilan contoh air laut dilakukan secara in situ sebanyak tiga kali pada enam stasiun penelitian. Pengukuran contoh air laut dilakukan secara eks situ, konsentrasi TN diukur  dengan metode persulphate dan TP dengan metode peroxodisulphate. Hasil pengukuran diperoleh rata-rata konsentrasi TN berkisar dari 0,053 – 0,165 mg/L dengan kecenderungan lebih tinggi pada stasiun 1, 2 dan 5 dengan nilai konsentrasi secara berturut-turut sebesar 0,102 mg/L; 0,100 mg/L; dan 0,165 mg/L.  Konsentasi TP berkisar dari  0,017 – 0,038 mg/L dengan nilai konsentrasi yang cenderung sama pada setiap stasiun pengamatan.  Hasil yang diperoleh menunjukkan nilai konsentrasi TN cenderung  bervariasi dan TP relatif stabil atau tidak bervariasi. 
Effect of lemongrass oil (Cymbopogon sp.) as anesthesia material in the closed transportation process of white snapper seeds (Lates calcarifer) Tristiana Yuniarti; Alfabetian Harjuno Condro Haditomo; Janet Rizkiana
Depik Vol 11, No 2 (2022): August 2022
Publisher : Faculty of Marine and Fisheries, Universitas Syiah Kuala

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.13170/depik.11.2.24573

Abstract

White snapper, Lates calcalifer, is a sea fish who was widely cultivated because the price reaches IDR 63,000.00/ kg for market size (500 gram up). Demand of white snapper on the market tends to increase, but there are high mortality problems when transporting seeds from seed sources to the destination location where was relatively far away. Lemongrass oil had geraniol compounds, citronellol and aromatherapy odors could reduce anxiety (sedatives) and reduce the level of fish metabolism by making the fish faint. The purpose of this study was to determine the effect of lemongrass oil on survival rate, blood profile (total of erythrocytes, leukocytes, and glucose levels) post-transportation of white snapper seeds with length and weight average of 9.71 ± 0.62 cm and 11.33 ± 1.82 g, respectively. The method used was experimental and completely randomized design (CRD) with 4 treatments 3 replications (0, 10, 20, 30 µl/L). The results showed that the allocation lemongrass oil with different concentrations gave a real effect on the survival rate but did not significantly affect the blood profile after transportation. The best concentration of lemongrass oil is 10 µl/L with survival rate of 100%.Keywords:AnesthesiaWhite snapperCymbopogon sp.Transportation
Komunitas makroinvertebrata bentik di perairan Situ Cibuntu, Jawa Barat Aiman Ibrahim; Imroatushshoolikhah Imroatushshoolikhah; Reliana Lumban Toruan; Ira Akhdiana; Lukman Lukman
Depik Vol 9, No 3 (2020): December 2020
Publisher : Faculty of Marine and Fisheries, Universitas Syiah Kuala

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.13170/depik.9.3.17633

Abstract

Situ Cibuntu, is one of urban ponds located in Bogor Regency, West Java. With a maximum surface area of 11 ha and maximum depth of 1,20 m, the pond serves as irrigation for nearby agricultural fields and recreational fishing. Located in relatively high urban pressure, the pond is highly affected by domestic, agricultural and industrial inflow which can influence the biotic community such as benthic macroinvertebrate. We studied benthic invertebrate community structure in Situ Cibuntu from October to November 2018 to determine the role of environmental factors on benthic macroinvertebrates. Samples were collected biweekly from five sampling points using an Ekman sediment grab with three replicates. Our study revealed 16 species of benthic macroinvertebrates belonging to four classes including Gastropoda, Bivalvia, Clitellata, and Insecta. Melanoides tuberculata species was found to have the highest abundance with an average abundance of 858 individuals/m2. Shanon-Wiener Diversity Index shows a relatively low diversity ranged from 0.61 to 1.26, while evenness index ranged from 0.36 to 0,66. Simpson Dominance Index ranged from 0.24 to 0.93.Keywords:DominanceCommunityAbundanceDiversityBenthic MacroinvertebratePond CibuntuABSTRAKSitu Cibuntu merupakan salah satu situ urban (urban pond) yang terletak di Kabupaten Bogor, Provinsi Jawa Barat. Situ Cibuntu yang memiliki luas permukaan 2,11 ha dengan kedalaman maksimum 1,20 m dimanfaatkan sebagai sumber irigasi pertanian dan sarana pemancingan ikan. Situ di kawasan perkotaan dapat mengalami tekanan karena pengaruh limbah domestik, pertanian, dan industri yang dapat mempengaruhi komunitas biotik seperti makroinvertebrata bentik. Penelitian ini bertujuan untuk mengetahui komunitas makroinvertebrata bentik di perairan Situ Cibuntu. Penelitian dilakukan pada bulan Oktober hingga November 2018 di lima stasiun pengamatan. Pengambilan sampel dilakukan sebanyak tiga kali dengan interval waktu dua minggu. Sampel makroinvertebrata bentik diambil dari sedimen pada setiap stasiun dengan menggunakan Ekman grab sebanyak tiga kali ulangan. Secara keseluruhan ditemukan 16 spesies makroinvertebrata bentik yang tergolong ke dalam empat kelas meliputi Gastropoda, Bivalvia, Clitellata, dan Insekta. Spesies Melanoides tuberculata memiliki kelimpahan tertinggi dengan nilai rata-rata sebesar 858 individu/m2. Keanekaragaman makroinvertebrata bentik tergolong rendah hingga sedang dengan nilai indeks Shanon Wiener (H’) berkisar 0,61-1,26. Nilai indeks kemerataan Pielou (E) berkisar 0,36-0,66, sedangkan indeks dominansi Simpson (D) berkisar 0,24-0,93.Katakunci:DominansiKomunitasKelimpahanKeanekaragamanMakroinvertebrata bentikSitu Cibuntu
Karakter bilateral simetri ikan betutu (Oxyeleotris sp.): Kajian keragaman morfologi sebagai dasar pengembangan budidaya Muhammad Nadjmi Abulias; Dian Bhagawati
Depik Vol 1, No 2 (2012): August 2012
Publisher : Faculty of Marine and Fisheries, Universitas Syiah Kuala

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.13170/depik.1.2.43

Abstract

Abstract. Genetic diversity information of Gobiidae is needed as a basis for management of its culture or conservation efforts. Mean while, the stability development of the paired organs in animals is closely related to the level of their genetic diversity. In this regard, a study has been conducted to determine of bilateral symmetry characteristics of marble gobies from Jenderal Soedirman reservoir of Banjarnegara and Rawapening Swamp of Salatiga. A survey method was used with purposive sampling technique. The observed variables were abnormalities and meristic bilateral characters. The characters including the number of soft rays on pectoral fins and pelvic fins, and the number of scales on lateral lines. The results showed that both marble gobies from Jenderal Soedirman Reservoir and Rawapening Swamp did not show abnormalities. However, their bilateral meristic characters had been fluctuated, especially for pectoral fins and lateral lines; whereas pelvic fins seem to be symmetry. According to their observed bilateral symmetry characters, in general, it could be concluded that marble gobies from Jenderal Soedirman Reservoir had a better genetic diversity compare to those from Rawapening Swamp. Therefore, it can be used as local genetic resources.Key words. Bilateral symmetry character, marbel gobies, Jenderal Soedirman Reservoirs, Rawa pening Swamp
Keragaman Genetik Ikan Cakalang (Katsuwonus pelamis) di Perairan Laut Maluku Utara Nebuchad Nezzar Akbar; Rusmawati Labenua
Depik Vol 7, No 2 (2018): August 2018
Publisher : Faculty of Marine and Fisheries, Universitas Syiah Kuala

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.13170/depik.7.2.11156

Abstract

Skipjack tuna is a migratory species that migrate globally throughout the ocean. The North Maluku Sea has a big potency on skipjack, this resource has been exploited intensively and gave the negative impact on skipjack population. The genetic data is one of the important information to strategy a better sustainable fisheries management. Hence, the aims of the study were to analyze the genetic diversity data in North Maluku Sea. The samples were collected from three locations, namely Morotai Island, South Halamera and Bacan. A total of 10 samples were collected from every location. The samples were extracted with Chelex 10%, and processing for PCR and sequencing.  The results showed that molecular characteristics in skipjack are 546 (bp). The genetic diversity was ranged from 0.800-1.000 with the total of 28 haplotypes of 30 samples. The genetic diversity is included in high/undisturbed criteria and showed the population still in stable condition.Ikan Cakalang merupakan migratori  spesies yang bermigrasi secara global di seluruh samudera. Potensi ikan cakalang sangat tinggi di perairan laut Maluku Utara. Pemanfaatan sumberdaya ikan cakalang sudah dilakukan lama dan terus menurus sehingga berdampak pada penurunan, oleh karena itu perlu segera dilakukan pengelolaan secara berkelanjutan. Data genetik merupakan salah satu informasi penting untuk menyusun rencana pengelolaannya di perairan laut Maluku Utara. Oleh karena itu penelitian ini bertujuan untuk melakukan analisis keragamana genetik ikan cakalang di perairan Maluku Utara. Sampel ikan diperoleh dari tiga lokasi, yaitu Pulau Moratai, Halamera Selatan dan Bacan, masing-masing lokasi dengan 10 sampel. Hasil penelitian diperoleh karakteristik molekuler pada ikan cakalang 546 (bp). Keragaman genetik ditemukan berkisar 0.800-1.000 dengan jumlah 28 jaringan haplotipe dari 30 sampel. Nilai keragaman genetik masuk dalam kriteria tinggi/baik, sehingga bisa dikatakan bahwa populasi ikan masih dalam kondisi stabil. 
Pemetaan daerah perikanan lampu (light fishing) menggunakan data viirs day-night band di perairan Pandeglang Provinsi Banten Adi Susanto
Depik Vol 4, No 2 (2015): AUGUST 2015
Publisher : Faculty of Marine and Fisheries, Universitas Syiah Kuala

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.13170/depik.4.2.2454

Abstract

Abstract. Light fishing in Pandeglang Banten has significantly developed in number of fishing fleet and using of lamp technology. The fishing ground of light fishing fleet dispersed from Labuan until Taman Nasional Ujung Kulon. The aim of this research is to map the fishing ground of light fishing using VIIRS-DNB data at August to November 2014. This research use descriptive analysis with case study on fishing ground of ligt fishing using VIIRS-DNB data in Pandeglang waters. The results show the fishing ground of light fishing at August to November spread from Lada Bay, Lesung Cape, Sumur District, selamat Datang Bay, until Panaitan Strait. In November, the numbers of fishing fleet have significantly decreased. The loft ofwind velocity in Sunda Strait caused big waves in Pandeglang waters. Moreover, light fishing fleet also move from coastal water to the sea to find the ideal depth.The fluctuation of fishing ground at August to November 2014 influenced by monsoon circulation that effectto current and water masses circulation there. It cause the changing of surface water fertility and influent to spreading of pelagic fish fishing ground as a main target of light fishing fleets in Pandeglang waters.Keyword: fishing ground; light fishing; Pandeglang; VIIRS-DNB Abstrak. Perikanan lampu di perairan Pandeglang Banten telah mengalami perkembangan yang signifikan baik dalam jumlah armada maupun teknologi lampu yang digunakan. Daerah penangkapan armada perikanan lampu tersebar mulai dari perairan Labuan hingga Taman Nasional Ujung Kulon. Penelitian ini bertujuan untuk memetakan daerah perikanan lampu di perairan Pandeglang menggunakan data VIIRS-DNB yang mampu mendeteksi radiasi yang dihasilkan oleh lampu yang digunakan untuk menarik perhatian ikan. Metode penelitian yang digunakan adalah deskriptif dengan studi kasus berupa sebaran daerah perikanan lampu di perairan Pandeglang menggunakan data VIIRS-DNB. Hasil analisis menunjukkan bahwa pada Bulan Agustus hingga November, daerah perikanan lampu tersebar mulai dari perairan Teluk Lada, Tanjung Lesung, Sumur, Teluk Selamat Datang hingga Selat Panaitan. Pada Bulan November, jumlah armada perikanan lampu mengalami penurunan yang signifikan. Hal ini dipengaruhi oleh perubahan kecepatan angin di perairan Selat Sunda yang berakibat pada tingginya gelombang di perairan Pandeglang. Selain itu, armada perikanan lampu juga tersebar lebih ke arah lautan untuk mencari kedalaman yang lebih tinggi. Perubahan daerah penangkapan perikanan lampu sepanjang Bulan Agustus-November 2014 sebagian besar dipengaruhi oleh angin muson yang berdampak pada perubahan arus massa air di Selat Sunda. Hal ini menyebabkan terjadinya perubahan kesuburan perairan yang berpengaruh terhadap daerah penyebaran ikan pelagis yang menjadi sasaran utama penangkapan bagi armada perikanan lampu di peraran Pandeglang.Kata kunci: daerah penangkapan ikan; perikanan lampu; Pandeglang; VIIRS-DNB
Trophic status analysis and estimation of fish production in Aneuk Laot Lake aquatic resources management, Sabang City Nurfadillah Nurfadillah; Irma Dewiyanti; Sri Riska Rahayu; Siswani Sari; Indri Karina; Hasfiandi Hasfiandi
Depik Vol 11, No 3 (2022): DECEMBER 2022
Publisher : Faculty of Marine and Fisheries, Universitas Syiah Kuala

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.13170/depik.11.3.27499

Abstract

Aneuk Laot Lake is located in Sabang City, Weh Island, Aceh Province. Changes in water quality can affect the life of aquatic organisms found in Aneuk Laot Lake. The purpose of this research estimates fish production and trophic status for the aquatic resource management of Aneuk Laot Lake, Sabang. This research was conducted in September 2019 in Lake Aneuk Laot using the TRIX, TSI (Trophic State Index) and Nygaard index methods to determine fish production and trophic status. Observation stations were determined using stratified random sampling method and analysis of chlorophyll-a was done using the Trichomatic method. The results showed that the waters of Aneuk Laot Lake can be categorized as eutrophic to hypereutrophic. The estimated value of fish production in Aneuk Laot Lake based on the chlorophyll-a approach is 109.84 kg/ha/year, with a lake area of 61.6 ha. Water quality parameters are still in a state that can be tolerated by aquatic organisms in Aneuk Laot Lake.Keywords:Fish production potential Water qualityTRIX indexBiomass productionWater productivity
Survival and growth of Pangasianodon hypophthalmus cultured under controlled photoperiod Cyntia Uli Artha Sihombing; Muhammad Fauzi; Windarti Windarti
Depik Vol 10, No 2 (2021): August 2021
Publisher : Faculty of Marine and Fisheries, Universitas Syiah Kuala

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.13170/depik.10.2.20053

Abstract

Changing in photoperiod duration may affects the physiology of nocturnal fish such as Pangasianodon hypophthalmus. A study aims to understand the effects of controlled photoperiod towards survival and growth of P. hypophthalmus has been conducted from June to August 2020. There were 3 treatments applied, namely natural photoperiod, 18 hours dark (18D), and 24 hours dark (24D) with 3 replications in each treatment. The rearing tanks used in this study were 100 L circular plastic tanks.  In 24D treatment, the tanks were placed under dark colored tarp tent continuously.  For the 18D treatment, the tanks were placed under dark tarp tent, but the tent was opened for 6 hours/ day (the tanks were in dark condition for 18 hours/ day), while the control tanks were positioned under natural photoperiod. P. hypophthalmus fingerlings, 6-8 cm TL and   4-5 g BW were used in this study. Thirty fishes were reared in each rearing tank, they were feed with commercial pellets, 2 times/day, at satiation. Fish survival was monitored every day, while samplings for fish growth were conducted weekly for a 8 weeks period. Results indicate that the survival of   fish was 100% in each treatment applied. Fish growth, however, shown differences. The growth of fish reared in 24D and 18D was better than that of the control. By the 9th week,  the fish in 24D was around 70.71g BW with 19.27 cm TL  (daily growth rate 9.35%), while those of the 18D was 69.41 g BW, 18.77 cm TL and 9.29% daily growth rate. The fish reared under natural photoperiod was around 61.95 g BW with 18.19 cm TL and 7.33% of daily growth rate. Data obtained indicate that the application of longer dark is positively improve the growth of P. hypophthalmus.Keywords:Nocturnal FishLight Dark Catfish

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