https://journal.bdfish.org/index.php/fisheries/issue/feedJournal of Fisheries2025-05-28T05:22:16+00:00Journal of Fisherieseditor.jfish@gmail.comOpen Journal Systems<p>The <em>Journal of Fisheries</em> is a double blind peer reviewed open access journal published by BdFISH that provides rapid publication of articles in all areas of fisheries science. The journal welcomes the submission of manuscripts that meet the general criteria of significance and scientific excellence. All issues (full) of the <a title="Journal of Fisheries" href="http://journal.bdfish.org/" target="_blank" rel="noopener">Journal of Fisheries</a> are also available on <a title="Journal of Fisheries also availabel on BdFISH Document" href="http://document.bdfish.org/category/journal/journal-of-fisheries/" target="_blank" rel="noopener">BdFISH Document</a>.</p> <p><strong>Journal of Fisheries at a glance</strong></p> <ul> <li class="show">ISSN: 2311-3111 (Online) and 2311-729X (Print)</li> <li class="show">Year of launching: December, 2013</li> <li class="show">Co-Editors-in-Chief: Professor Martyn C. Lucas (University of Durham, UK) and Professor M. Nazrul Islam (University of Rajshahi, Bangladesh)</li> <li class="show">Journal policy: Open Access, Peer Reviewed, Online First!</li> <li class="show">Journal issues: 3 issues in a year (April, August, and December), accepted article is published online as Online First! and will be included in the contents of the upcoming issue</li> <li class="show">DOI prefix: 10.17017</li> <li class="show">Journal owner: BdFISH</li> <li class="show">Web: <a title="Journal of Fisheries" href="http://journal.bdfish.org/" target="_blank" rel="noopener">journal.bdfish.org</a></li> </ul> <p> </p>https://journal.bdfish.org/index.php/fisheries/article/view/820Impact of high intensity ultrasound on the quality and preservation period of blue shrimp (Litopenaeus stylirostris) muscle2025-05-28T05:21:23+00:00Wilfrido Torres-Arreolawilfrido.torres@unison.mxRey Partida-Riverareymanuelandrespartidarivera@gmail.comVictor M. Ocaño-Higueravictor.ocano@unison.mxSaúl Ruíz-Cruzsaul.ruizcruz@unison.mxGuadalupe Miroslava Suarez-Jimenezmiroslava.suarez@unison.mxNathaly Montoya-Camachonathaly.montoya@unison.mxJosé Carlos Rodríguez-Figueroajose.rodriguez@unison.mxEnrique Márquez-Riosenrique.marquez@unison.mx<p>Due to the limited shelf life of aquatic products, the use of advanced technologies to extend their freshness has become more popular recently. This study aimed to assess the impact of high-intensity ultrasound (HIU) on the quality of blue shrimp (<em>Litopenaeus stylirostris</em>) tails during 20 days of ice storage. Shrimp samples were treated at 70% amplitude for 0 (C), 30 (T1), 60 (T2), and 90 (T3) minutes. Key quality parameters were analyzed every 5-day. The initial total bacterial count (TBC) was 2.02 log CFU g<sup>–1</sup>, increasing to 6.09 (C), 5.32 (T1), 5.01 (T2), and 5.34 (T3) at the end of storage, with the control samples exceeding the acceptability limit. In terms of color, the initial L* value was 52.96, increasing to 62.96, 57.69, 57.94, and 57.78 for C, T1, T2, and T3, respectively. No significant differences were observed among treatments in pH (ranging from 7.22 to 8.33), shear force (from 15.40 to 18.50 N), water-holding capacity (from 93.02 to 98.23%), TVB-N (from 24.11 to 31.61 mg 100g<sup>–1</sup>), or non-protein nitrogen (from 0.78 to 0.48%). Likewise, SDS-PAGE profiles showed no visible protein degradation. These results indicate that HIU, particularly at 60 minutes, can extend shelf life by delaying microbial growth and preserving color, without adversely affecting the physicochemical or structural properties of the muscle.</p>2025-05-27T00:00:00+00:00Copyright (c) 2025 The Author(s)https://journal.bdfish.org/index.php/fisheries/article/view/760Anesthetic efficacy of Mentha piperita and Mentha spicata essential oils on rainbow trout (Oncorhynchus mykiss)2025-05-28T05:21:36+00:00Secil Metinsecilekici@isparta.edu.trOnur Ozdikyaronur.ozdikyar@hotmail.comIsa Telciisatelci@isparta.edu.tr<p>In the present study, anesthetic effects of <em>Mentha piperita</em> and <em>Mentha spicata</em> essential oils were investigated on rainbow trout. For this purpose, five treatments of the essential oils (50, 100, 200, 300 and 500 mg L<sup>–1</sup> concentrations) and one control (2-phenoxyethanol; 0.3 ml L<sup>–1</sup> concentration) have been used for rainbow trout (<em>Oncorhynchus mykiss</em>; mean weight of 15 g). In addition, the mean lethal doses (10 minutes LC<sub>50</sub> concentration) of the essential oils were also determined. <em>Mentha piperita</em> and <em>M. spicata</em> essential oils at 200, 300 and 500 mg L<sup>–1</sup> doses showed better anaesthetic effect than control (<em>p</em> < 0 .05). The ideal anesthetic dose of each essential oil was 200 mg L<sup>–1</sup> (<em>p</em> < 0.05). At this concentration, deep anesthesia (Stage IV) induction time for <em>M. piperita</em> and <em>M. spicata</em> on rainbow trout were found as 169.66 s and 65.0 s, respectively. The recovery times at 200 mg L<sup>–1</sup> concentration were 188.0 s for <em>M. piperita</em> and 65.33 s for <em>M. spicata</em>. The lethal dose of both essential oils in fish was 150 mg L<sup>–1</sup>. This study suggests that the essential oils of <em>M. piperita</em> and <em>M. spicata</em> are both effective anesthetic agents for rainbow trout.</p>2025-05-15T18:41:11+00:00Copyright (c) 2025 The Author(s)https://journal.bdfish.org/index.php/fisheries/article/view/722Application of machine learning to growth model in fisheries2025-05-28T05:21:49+00:00Semra Benzersbenzer@gazi.edu.trRecep Benzerrbenzer@gmail.comAli Gülaligul@gazi.edu.tr<p>Traditional growth models, such as length-weight relationships (LWRs) and the von Bertalanffy (VB) growth function, have been widely used in fishery science. Their limitations in capturing nonlinear patterns necessitate alternative approaches. Machine learning (ML) techniques have recently gained attention as a powerful tool for enhancing predictive accuracy in biological studies. In this study, the growth parameter of Eastern mosquitofish, <em>Gambusia holbrooki</em> (135 females: 21–58.78 mm and 0.152–3.424 g; 59 males: 19.25–43.20 mm; 0.108–1.075 g), was determined with traditional LWRs, VB, and machine learning algorithms. The LWRs growth equations of female and male individuals were W=0.00002102 L<sup>2.8849</sup> and W=0.00003064 L<sup>2.8212</sup>, respectively. The VB equations were determined L<sub>t</sub>=80.990 [1–e<sup>–0.990(t+0.208)</sup>] for female and L<sub>t</sub>=64.172 [1-e<sup>–0.610(t+0.271)</sup>] for male. In general, the performance of both methods (VB model and ML algorithms) in predicting lengths, as measured by Mean Absolute Percentage Error (MAPE), was satisfactory, with the VB model demonstrating slightly superior performance (2.734). In addition, the ML algorithm gives better results in length data prediction with multilayer perceptron and in weight data prediction with Sequential Minimum Optimization (SMO) algorithm when ML algorithms are examined. The diverse ML algorithms positively impacted the investigations addressing growth-related issues in fisheries.</p>2025-05-10T05:29:29+00:00Copyright (c) 2025 The Author(s)https://journal.bdfish.org/index.php/fisheries/article/view/706Impact of environmental factors on the dietary preferences of Salmophasia bacaila in the Dhepa River, Bangladesh2025-05-28T05:22:02+00:00Md. Afzal Hossainafzalhstu@gmail.comMost. Sabina Yesminsabinasalma1993@gmail.comShefali Aktarshefali.bmb@gmail.comMd. Mamunmamun1006001@gmail.comKrishna Chandra Roykrishnaroy@hstu.ac.bdMd. Ashraful Alamashraful.fbg@hstu.ac.bdMd. Rezoanul Haquerezoanfm@yahoo.com<p>This study investigates the environmental variability and gut contents of an indigenous fish chela (<em>Salmophasia bacaila</em>) in the Dhepa River, Bangladesh. We conducted fish sampling and measured water quality across three sites from September 2017 to February 2018. The results revealed significant fluctuations in water temperature, dissolved oxygen, and pH (PERMANOVA: <em>p</em> = 0.001). There was spatio-temporal variation in water transparency (PERMANOVA: <em>p</em> = 0.001). The prey analysis identified 13 prey groups in the diet of fish, predominantly consisting of phytoplankton (92.9%), while zooplankton contributed only 7.1%. Twenty phytoplankton and seven zooplankton genera were recorded in the guts, with significant temporal variations in prey diversity (PERMANOVA: <em>p</em> = 0.010). These findings highlight that <em>S. bacaila</em> are primarily plankton feeders, with shifts in prey diversity driven by environmental factors in the Dhepa River. This research enhances our understanding of ecological dynamics and the relationship between <em>S. bacaila</em> and their prey in riverine ecosystems.</p>2025-05-07T13:21:43+00:00Copyright (c) 2025 The Author(s)https://journal.bdfish.org/index.php/fisheries/article/view/720Effects of Streptococcus agalactiae infection and oral florfenicol administration on the hemato-biochemistry, erythrocyte morphology and histopathology of Oreochromis niloticus2025-05-28T05:22:16+00:00Joshi Sharonashjosh9@gmail.comThangapalam Jawahar Abrahamabrahamtj1@gmail.comArya Senarya.sen2@gmail.comRatnapriya Dasratnapriyadas2015@gmail.comPriyanka Sinhasinhapriyanka1197@gmail.comSatyanarayana Bodabodasatya92@gmail.comArumugam Umauma@tnfu.ac.inPrasanna Kumar Patilpkpatilvet@gmail.com<p>Streptococcosis is considered one of the most important diseases affecting farmed tilapia, causing severe economic losses. Antimicrobial therapy is the principal control measure applied during outbreaks. This research assessed the efficacy of florfenicol (FFC) when fed at 15 mg kg biomass<sup>–1</sup> day<sup>–1</sup> for 10 days against <em>Streptococcus agalactiae</em> infection in <em>Oreochromis niloticus</em> in terms of survival, changes in hemato-biochemistry, erythro-morphology, and histoarchitecture of the vital organs. <em>Streptococcus agalactiae</em> was moderately virulent to <em>O. niloticus</em> with a lethal dose (LD<sub>50</sub>) of 1.26×10<sup>8</sup> cells fish<sup>–1</sup> and sensitive to FFC with a minimal inhibitory concentration of 0.78 μg mL<sup>–1</sup>. It caused systemic infection in tilapia. FFC therapy reduced bacterium-induced mortality and physiological stress. The histopathological findings indicated significant improvement in the kidney and liver tissues of fish. The erythrocyte morphological alterations noted in the challenged fish were irregularly shaped, elongated, crenated, and teardrop cells, hypochromic erythrocytes, ragged cytoplasmic membranes, hypertrophied nuclei, eccentric nuclei, and vacuolation, all of which were mitigated with FFC therapy. Eventually, FFC therapy improved wound healing, normalized plasma biochemistry, and aided recovery from bacterial infection. This study revealed that the therapeutic dose of FFC was effective against <em>S. agalactiae</em> infection in <em>O. niloticus</em> and lessened the physiological stress.</p>2025-04-17T18:09:06+00:00Copyright (c) 2025 The Author(s)