Aquaculture and Fisheries最新文献

{"title":"Isolation and identification of the pathogen in a case of Takifugu rubripes coinfected with parasites and bacteria","authors":"Gengtong Zhao ,&nbsp;Xinpeng Ni ,&nbsp;Ziyi Zhang ,&nbsp;Meili Pan ,&nbsp;Xiaohang Wang ,&nbsp;Yuyu Xiong ,&nbsp;Xiuli Wang ,&nbsp;Ruijun Li","doi":"10.1016/j.aaf.2025.04.003","DOIUrl":"10.1016/j.aaf.2025.04.003","url":null,"abstract":"<div><div>In August 2023, a significant outbreak occurred at a puffer fish farm in Dandong, Liaoning, China, affecting a large number of <em>Takifugu rubripes</em>. The affected fish displayed symptoms including fin ulcers and white spots, which were confirmed through clinical testing conducted at Dalian Ocean University. Microscopic examinations revealed a substantial presence of black dot-like unicellular parasites on the gills of the diseased fish. Further analyses, including methyl green-pyronine staining, optical microscopy, and biological scanning electron microscopy, facilitated the identification of the parasite as <em>Amyloodinium ocellatum</em>. Additionally, bacterial isolation and culture, Gram staining, physiological and biochemical testing, 16S rDNA sequence analysis, phylogenetic tree, and drug sensitivity experiments were performed on the organs of the affected fish. The results identified two dominant bacterial strains, <em>Vibrio scophthalmi</em> and <em>Vibrio harveyi</em>, present in the spleen and kidney of the infected fish. Antibiotic sensitivity tests indicated that <em>V. scophthalmi</em> is susceptible to antibiotics such as ciprofloxacin, florfenicol, and enrofloxacin, while <em>V. harveyi</em> showed sensitivity to ciprofloxacin, florfenicol, and ofloxacin. In conclusion, this case was determined to be a combined infection involving both parasites and bacteria. The findings of this study offer valuable insights for the prevention and control of epidemics affecting <em>Takifugu rubripes</em>.</div></div>","PeriodicalId":36894,"journal":{"name":"Aquaculture and Fisheries","volume":"11 2","pages":"Pages 280-288"},"PeriodicalIF":0.0,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145842797","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Dynamic shifts of intestinal microbiota during sex reversal in swamp eels (Monopterus albus)","authors":"Han Chen ,&nbsp;Yong Zhang ,&nbsp;Muhammad Shahdat Hossain ,&nbsp;Xinjing Du ,&nbsp;Xin Wang ,&nbsp;Siliang Yuan ,&nbsp;Yaqi Liu ,&nbsp;Jingcheng Dai ,&nbsp;Dongru Qiu","doi":"10.1016/j.aaf.2025.08.003","DOIUrl":"10.1016/j.aaf.2025.08.003","url":null,"abstract":"<div><div>Many aquatic animals undergo sex changes during their lifetime. Swamp eels (<em>Monopterus albus</em>) are typically protogynous freshwater fish, widely cultured in Asia. However, the impact of the sex transformation process on gut microbiota remains poorly understood. In this study, we measured the morphological data and hormone levels of swamp eels and subsequently analyzed the intestinal microbiota at different stages of sexual development. We found significant differences in the richness of intestinal microbiota between males and females. Specifically, a remarkably high abundance of <em>Firmicutes</em> was observed in female <em>M. albus</em>, while the abundance of <em>Bacteroidetes</em> and <em>Fusobacteria</em> was significantly increased in males. Additionally, <em>Cetobacterium</em> was the primary component of <em>Fusobacteria</em> detected in male swamp eels. Furthermore, network analysis indicated that the intestinal microbiota of males exhibited higher complexity and stability. PICRUSt analysis suggested that microbiota alterations may contribute to differential individual metabolisms, including energy metabolism, glycan biosynthesis and metabolism, membrane transport, and cell motility. These results suggest that intestinal microbiota composition varies with sexual phenotype in <em>M. albus</em> and may provide insight into microbial dynamics during sex reversal.</div></div>","PeriodicalId":36894,"journal":{"name":"Aquaculture and Fisheries","volume":"11 2","pages":"Pages 341-350"},"PeriodicalIF":0.0,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145842294","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Design of a biplane hyper-efficiency trawl door (HETD) through structure optimization","authors":"Xin Zhuang ,&nbsp;Xinxing You ,&nbsp;Fuxiang Hu ,&nbsp;Shuchuang Dong ,&nbsp;Daisuke Shiode ,&nbsp;Tadashi Tokai","doi":"10.1016/j.aaf.2025.01.002","DOIUrl":"10.1016/j.aaf.2025.01.002","url":null,"abstract":"<div><div>Based on the developed biplane hyper-lift trawl door (HLTD), a structure optimization approach integrating a radial basis function neural network, a multi-objective genetic algorithm, and computational fluid dynamics (CFD) analysis was employed to design a biplane hyper-efficiency trawl door (HETD), with the objective of achieving reduced fuel consumption for the same swept sea area. The mechanism by which the biplane HETD outperformed the biplane HLTD in hydrodynamic performance at an attack angle of 20° was clarified through variance analysis and CFD visualization. Hydrodynamic experiments confirmed that the maximum lift coefficient of the biplane HETD was 2.11, which was slightly smaller than that of the biplane HLTD (2.18), while the corresponding drag coefficient decreased by 27.6%, resulting in a significant increase of 30.0% in the lift-to-drag ratio. The stall angle of the biplane HETD was also reduced by 5° compared to the biplane HLTD. Subsequently, a pair of sleds was attached to the bottom of the biplane HETD to reduce contact with the seabed and thereby reduce friction without affecting its hyper-efficiency characteristics.</div></div>","PeriodicalId":36894,"journal":{"name":"Aquaculture and Fisheries","volume":"11 2","pages":"Pages 361-374"},"PeriodicalIF":0.0,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145842297","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Meat yield prediction of the red swamp crayfish Procambarus clarkii based on machine learning","authors":"Zheyan Chen ,&nbsp;Xianji Tao ,&nbsp;Xilei Li ,&nbsp;Yihai Qiao ,&nbsp;Xiao Cao ,&nbsp;Changjun Mou ,&nbsp;Jiale Li ,&nbsp;Jianbin Feng","doi":"10.1016/j.aaf.2025.08.002","DOIUrl":"10.1016/j.aaf.2025.08.002","url":null,"abstract":"&lt;div&gt;&lt;div&gt;Meat yield is a complex and economically significant trait for the red swamp crayfish &lt;em&gt;Procambarus clarkii&lt;/em&gt;. Identifying the most suitable weight range for market readiness and establishing an integrated machine learning model to predict the meat yield addresses widespread challenges in &lt;em&gt;P&lt;/em&gt;. &lt;em&gt;clarkii&lt;/em&gt;, holding economic value and practical importance for the breeding of high-yield &lt;em&gt;P&lt;/em&gt;. &lt;em&gt;clarkii&lt;/em&gt;. Phenotypic traits including full length (FL), body length (BL), abdominal length (AL), the second uromere length (2UL), width (2UW), and height (2UH), along with body weight (BW), were measured from 1392 &lt;em&gt;P. clarkii&lt;/em&gt; collected from cultivated paddy fields. Meat yield (MY) was calculated through dissection and weighing of tail meat weight (TMW). To assess the sexual dimorphism, inter-trait correlations, and multicollinearity, multiple descriptive statistical tests were employed on the collected dataset, including the data normalization, Pearson correlation coefficient calculation, and Variance Inflation Factor (VIF) calculations. To determine the optimal weight which optimizes MY and TMW across both sexes Lowess bivariate curves were utilized for fitting. various machine learning methods were utilized to predict the meat yield of &lt;em&gt;P. clarkii&lt;/em&gt;, evaluated against an independent test dataset. Additionally, to understand how key traits contribute to the predictive probability of &lt;em&gt;P. clarkii&lt;/em&gt; meat yield, SHapley Additive exPlanations (SHAP) interpretability methods were employed on the most accurate predictive algorithm. The AL, 2UW, 2UH, BW, and MY were statistically significant differences between sexes. FL, BL, AL, 2UL, 2UW, 2UH, BW, TMW were all highly positively correlated with each other, while MY was negatively correlated with these traits. The VIF test showed a high degree of collinearity among BL, FL, BW, and TMW. The optimal weight for maximum meat yield and tail meat was identified as 27.75 g for females and 17.51g for males. Across three machine learning models we conducted, the Gradient Boosting Regressor (GBR) model consistently produced the best predictions for meat yield in both sexes with. SHAP analysis revealed that the most critical trait examined was BW, with an explanation percentage of 40.8% in females and 46.6% in males. For females, FL (18.3%), 2UW (10.9%), and BL (10.7%) explained a high proportion among the traits included, whereas for males, BL (24.0%), AL (11.7%) and 2UH (6.6%) were more pronounced. In this study, an robust machine learning framework for accurately predicting &lt;em&gt;P. clarkii&lt;/em&gt; meat yield was developed based on complex phenotypic traits. Compared to traditional destructive measurement methods and conventional regression models, this approach significantly enhances both operational efficiency and predictive accuracy. Additionally, the optimized weight threshold offers valuable insights into the commercial &lt;em&gt;P. clarkii&lt;/em&gt; breeding industry, ensuring","PeriodicalId":36894,"journal":{"name":"Aquaculture and Fisheries","volume":"11 2","pages":"Pages 333-340"},"PeriodicalIF":0.0,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145842293","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Evaluating feeding strategies to improve growth and profitability in carp fattening","authors":"Md Anwar Hossain ,&nbsp;Md Akhtar Hossain ,&nbsp;Md Ayenuddin Haque ,&nbsp;Mst Nurjahan Begum ,&nbsp;Sumaiya Akter ,&nbsp;Noorashikin Md Noor ,&nbsp;Azlan Abas ,&nbsp;Simon Kumar Das","doi":"10.1016/j.aaf.2025.09.002","DOIUrl":"10.1016/j.aaf.2025.09.002","url":null,"abstract":"<div><div>Rising feed costs and increasing climate variability, especially in drought-prone areas, threaten the sustainability of carp fattening practices in Bangladesh. This study aimed to evaluate cost-effective and climate-adaptive feeding strategies for sustainable aquaculture production. A six-month on-farm trial was conducted using three treatments: T1 (100% commercial feed), T2 (70% commercial + 30% homemade feed), and T3 (T2 with one-day-per-week feeding restriction). Standard water quality parameters were monitored throughout the trial to ensure optimal culture conditions. While growth performance and yield did not differ significantly among treatments, T3 achieved the most efficient feed conversion ratio (FCR) and significantly reduced feed cost by 15.57% compared to T1. T3 also recorded the highest profit margin 19.49% greater than T2 and 28.89% higher than T1, without compromising fish health or water quality. These findings highlight that partial replacement of commercial feed with homemade feed, coupled with mild feeding restriction, is an economically viable and environmentally sound strategy. This approach is especially suitable for smallholder farmers in climate-vulnerable regions, offering a pathway to reduce production costs and enhance resilience. Policymakers and extension services are encouraged to promote such hybrid feeding strategies to support sustainable aquaculture and improve farmer livelihoods.</div></div>","PeriodicalId":36894,"journal":{"name":"Aquaculture and Fisheries","volume":"11 2","pages":"Pages 400-409"},"PeriodicalIF":0.0,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145842317","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Investigating the resistance of rice-field fisheries to transition into rice-fish farming and pond aquaculture in Cambodia","authors":"Benter Anyango ,&nbsp;Virakbot Hou ,&nbsp;Hao Xu ,&nbsp;Lihao Zhou ,&nbsp;Somony Thay ,&nbsp;Xugan Wu ,&nbsp;Wenbo Zhang","doi":"10.1016/j.aaf.2025.08.001","DOIUrl":"10.1016/j.aaf.2025.08.001","url":null,"abstract":"","PeriodicalId":36894,"journal":{"name":"Aquaculture and Fisheries","volume":"11 2","pages":"Pages 384-399"},"PeriodicalIF":0.0,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145842318","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Research on the molecular mechanisms of crucian carp adaptation to eutrophication","authors":"Lingwei Tang ,&nbsp;Deng Pan ,&nbsp;Yizhen Wang ,&nbsp;Shuxia Yao ,&nbsp;Xueru Qian ,&nbsp;Chigang Huang ,&nbsp;Fangyuan Peng ,&nbsp;Jinghui Liu ,&nbsp;Wen Fu ,&nbsp;Liangyue Peng ,&nbsp;Yamei Xiao ,&nbsp;Wenbin Liu","doi":"10.1016/j.aaf.2025.08.012","DOIUrl":"10.1016/j.aaf.2025.08.012","url":null,"abstract":"<div><div>Eutrophication significantly impacts on aquatic ecosystems. The accumulation of nutrients such as nitrogen and phosphorus in water bodies leads to a series of ecological problems, including water quality deterioration, reduced dissolved oxygen levels, and decreased transparency. These issues significantly impact the physical and chemical properties of water bodies, the diversity of aquatic organisms, community structure, and ecological functions. <em>Carassius cuvieri</em> (CC) and Triploid <em>Crucian carp No. 2</em> (TCC) are common freshwater aquaculture fish species with extensive farming foundations and economic value. Their survival and growth are closely tied to environment conditions. This study uses CC and Triploid TCC as research subjects, conducting a 30-day eutrophication aquaculture experiment in a mildly eutrophic water body (TN: 0.868 mg/L; TP: 0 mg/L) as the initial environment. Combining morphological, histological, transcriptomic, inhibitor-treatment, and qRT-PCR techniques, we explored the molecular mechanisms underlying the adaptation of crucian carp to eutrophication environments. The results showed that, as the degree of eutrophication increased, growth indices of both CC and TCC were affected to varying degrees. Peripheral blood cell and histological section observations revealed abnormal blood cell morphology, increased white blood cell counts, nuclear displacement and aggregation in hepatocytes, curved and thinned gill filaments, and broken and damaged gill filaments in both fish species; High-throughput sequencing results showed that differentially expressed genes in liver tissue were primarily enriched in immune-mediated infectious-diseases, lipid-metabolism, and signal -transduction pathways. mRNA expression analysis of crucian carp embryos treated with the <em>TLR5</em> inhibitor TH1020 suggested that changes in certain genes within the TLRs signaling pathway may be associated with the activation of downstream cascades and the secretion of pro-inflammatory cytokines, collectively facilitating fish adaptation eutrophication. This study provides scientific experimental evidence for optimising large-scale fish farming models, monitoring of aquaculture environmental quality, and maintaining the balance of aquatic ecosystems. TCC copes better with eutrophication through stronger antioxidant and immune responses, whereas CC shows more pronounced gill and liver damage.</div></div>","PeriodicalId":36894,"journal":{"name":"Aquaculture and Fisheries","volume":"11 2","pages":"Pages 242-254"},"PeriodicalIF":0.0,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145842796","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Cadmium-induced disruption of monoaminergic signaling and motor behavior in developing zebrafish","authors":"Sugiyono ,&nbsp;Zulvikar Syambani Ulhaq ,&nbsp;Mitsuyo Kishida","doi":"10.1016/j.aaf.2025.08.007","DOIUrl":"10.1016/j.aaf.2025.08.007","url":null,"abstract":"<div><div>Cadmium (Cd) is a widespread environmental pollutant known for its neurotoxic and endocrine-disrupting effects, yet its impact on early vertebrate development remains incompletely understood. This study investigated the toxicity and molecular mechanisms of Cd exposure in zebrafish embryos, a widely used model for developmental and neurotoxicological research. Zebrafish embryos were exposed to different concentrations of CdCl₂ from 2 to 144 h post-fertilization (hpf) to evaluate morphological changes, gene expression alterations, and behavioral effects. Exposure to concentrations ≥1 μM resulted in morphological abnormalities, including altered head shape and malformations of the swim bladder and ear, along with increased mortality, while larval growth and hatching rates were unaffected. Gene expression analyses revealed that Cd exposure dysregulated key enzymes and transporters in the dopaminergic (DA) and serotonergic (5-HT) systems, with significant upregulation of <em>th2</em> and <em>tph2</em> and dose-dependent manner. Correspondingly, locomotor behavior was impaired, with reduced tactile response rescued by DA and 5-HT agonists, and increased spontaneous swimming reversed by both DA and 5-HT receptor antagonists. Moreover, Cd acted as an endocrine disruptor by upregulating brain aromatase (<em>cyp19a1b</em>) and estrogen receptor (ER) 1 (<em>esr1</em>), with evidence suggesting that part of its neurobehavioral toxicity is mediated through ER signaling. Altogether, our results suggest that Cd exposure disrupts neurochemical pathways and endocrine signaling during early development, leading to altered morphology and behavior in zebrafish embryos and larvae.</div></div>","PeriodicalId":36894,"journal":{"name":"Aquaculture and Fisheries","volume":"11 2","pages":"Pages 271-279"},"PeriodicalIF":0.0,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145842790","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Fishery products consumption: Evidence of persistence and trends in 25 OECD countries","authors":"Sakiru Adebola Solarin ,&nbsp;Carmen Lafuente ,&nbsp;Luis Alberiko Gil-Alana ,&nbsp;María Jesús González-Blanch","doi":"10.1016/j.aaf.2025.07.003","DOIUrl":"10.1016/j.aaf.2025.07.003","url":null,"abstract":"<div><div>Given the nutritional relevance and health benefits of fishery products consumption, this article examines the statistical properties of fishery products consumption in 25 OECD countries from 1961 to 2017, focusing on the degree of persistence. Using a methodology based on fractional integration, we explore if mean reversion takes place in the series or, if on the contrary, shocks do have a permanent nature. The empirical results show the existence of positive time trends in the majority of countries, the only exceptions being Greece, Japan, Portugal and the UK. Mean reversion is found in 17 out of the 25 countries examined; the unit root null hypothesis cannot be rejected in 7, while Japan is the only country with an order of integration significantly higher than 1. These findings suggest that short-term measures are more effective than long-term interventions in promoting fishery products consumption in most OECD countries. The policy implications are discussed in the final part of the manuscript.</div></div>","PeriodicalId":36894,"journal":{"name":"Aquaculture and Fisheries","volume":"11 2","pages":"Pages 375-383"},"PeriodicalIF":0.0,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145842295","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Machine learning for extracting morphological phenotypic traits and estimating weight in largemouth bass","authors":"Zhipeng He ,&nbsp;Youbo Jiang ,&nbsp;Xu Wang ,&nbsp;Yan Xie ,&nbsp;Yi Cheng ,&nbsp;Jie Mei","doi":"10.1016/j.aaf.2025.09.004","DOIUrl":"10.1016/j.aaf.2025.09.004","url":null,"abstract":"<div><div>The acquisition of phenotypic data is fundamental for the genetic breeding of aquatic animals. To enhance the efficiency of obtaining phenotypic data for largemouth bass (LMB), we developed a phenotype extraction that employed the key points detection Real-Time Multi-Person Pose Estimation (RTMPose) model for rapid, efficient, and accurate measurement of morphological phenotypic data from captured images. 717 images were respectively acquired from the side view and top view and constructed the corresponding datasets. After training and validating the image dataset using the RTMPose model, 15 morphological traits data (total body length, body length, body height, jaw length, head length, head height, trunk length, pectoral fin length, dorsal fin length, anal fin length, caudal fin length, caudal peduncle length, caudal peduncle height, distance between eyes, and body thickness) were measured. All traits achieved the MAPE of less than 3%, and most traits exhibited R² values exceeding 94%. Subsequently, multiple machine learning models were constructed to predict body weight (BW) and carcass weight (CW) of LMB. Among them, multiple linear regression, ridge regression, lasso regression, and support vector regression yielded similarly high predictive performance, For BW, these four models achieved <em>R</em>² values of approximately 0.943, with MAE ranging from 8.167 to 8.338 g, RMSE between 11.903 and 12.036 g, and MAPE from 1.957% to 1.979%. For CW, the <em>R</em>² was around 0.880, with MAE values between 8.597 and 8.681 g, RMSE ranging from 11.388 to 11.568 g, and MAPE between 3.291% and 3.328%. And SHAP analysis identified body height as the key morphological trait influencing both BW and CW in the sampled population. Our findings demonstrate that integrating keypoint detection with machine learning enables efficient and accurate phenotyping and weight prediction in fish, highlighting its practical value for intelligent aquaculture and breeding applications.</div></div>","PeriodicalId":36894,"journal":{"name":"Aquaculture and Fisheries","volume":"11 2","pages":"Pages 323-332"},"PeriodicalIF":0.0,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145842292","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}