{"title":"Strengthening African Aquaculture","authors":"Giovanni M. Turchini, Nie Pin","doi":"10.1111/raq.70018","DOIUrl":"https://doi.org/10.1111/raq.70018","url":null,"abstract":"<p>Aquaculture in Africa holds vast potential, yet its contribution to global production remains limited. The study by Iheanacho et al. [<span>1</span>], featured in this issue of <i>Reviews in Aquaculture</i>, highlights the critical role of innovative and sustainable aquafeeds in advancing the sector. While significant strides have been made in countries like Egypt, Nigeria, and Uganda, many African nations continue to struggle with challenges such as feed availability, disease management, market access, and investment. Addressing these barriers requires a research-driven approach that fosters innovation, supports sustainable practices, and integrates aquaculture into national development strategies.</p><p>Despite its relatively small global share, African aquaculture has grown nearly 20-fold since the 1990s [<span>2</span>]. However, growth remains uneven, with Egypt alone accounting for over 70% of the continent's production. Other nations face constraints related to feed quality, seed availability, and poor market linkages [<span>3</span>]. Sustainable feed development, as discussed by Iheanacho et al. [<span>1</span>], is particularly crucial, as current reliance on fishmeal exerts pressure on wild stocks, as well as negatively impacting formulation costs. Economic and environmental considerations must also be balanced. Aquaculture positively impacts GDP growth in many African nations [<span>4</span>], but it also has environmental trade-offs. While aquaculture can initially help reduce greenhouse gas emissions by offsetting pressure on wild fish stocks, its long-term expansion may increase its carbon footprint or introduce other environmental risks if not managed properly. This underscores the need for policies that support low-impact farming methods, optimize resource use, and enhance waste management strategies to ensure sustainable growth [<span>5</span>]. Research and technological innovation are central to overcoming the sector's challenges. Countries that have invested in aquaculture research—such as Egypt and Nigeria—have seen the most significant gains [<span>3</span>].</p><p>Advancing African Aquaculture Requires a Strong Focus on Key Research Priorities. Genetic improvements, particularly through selective breeding, can enhance growth rates, disease resistance, and feed efficiency in widely farmed species like tilapia and African catfish. Equally important is the development of disease management strategies that minimize reliance on antibiotics, ensuring healthier fish stocks and reducing production losses. While climate change poses a significant long-term challenge by altering water temperature, oxygen levels, and overall fish health, research into climate resilience is essential for developing adaptive farming techniques that ensure sustainable production. However, in the immediate term, the growth of aquaculture in Africa depends more directly on access to natural resources, investment, and a skilled workforce. Without suffic","PeriodicalId":227,"journal":{"name":"Reviews in Aquaculture","volume":"17 2","pages":""},"PeriodicalIF":8.8,"publicationDate":"2025-03-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/raq.70018","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143622580","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Yongguan Liao, Bo Zhang, Deshou Wang, Dongneng Jiang, Chunhua Zhu, Siping Deng, Huapu Chen, Guangli Li, Hongjuan Shi
{"title":"Metabolism, Function, Molecular Mechanism, and Application of Carotenoids in Coloration of Aquatic Animals","authors":"Yongguan Liao, Bo Zhang, Deshou Wang, Dongneng Jiang, Chunhua Zhu, Siping Deng, Huapu Chen, Guangli Li, Hongjuan Shi","doi":"10.1111/raq.70016","DOIUrl":"https://doi.org/10.1111/raq.70016","url":null,"abstract":"<div>\u0000 \u0000 <p>Among vertebrates, aquatic animals have a wide variety of body color. Yellow and red coloration, an important economic trait of aquatic animals, plays pivotal roles in ornamental value and consumption. Fish possess the most chromatophore types in vertebrates, and carotenoids primarily contribute to erythrophore and xanthophore pigmentation. Carotenoid metabolism and regulation of chromatophore development have long been a focus of selective breeding programs in fish. In crustaceans, carotenoids have been proven to be involved in enhancing coloration. However, the carotenoid requirements vary among different aquatic animals. The metabolic pathways in vivo and biochemical processes have not been well summarized. Thus, in this review, we introduced various types of carotenoids and their metabolic pathways in different aquatic species and described a similar mechanism of ketocarotenoid biosynthesis in fish and birds. We have focused on carotenoid metabolism processes and several significant genes involved in the coloration of vertebrates, such as scavenger receptors, apolipoproteins, ketolases, and β-carotene oxygenase, and their applications in aquaculture. In addition, we also summarized the current problems of carotenoid addition in diets and emphasized the importance of aquatic breeding and molecular biotechnology in carotenoid coloration and ornamental fish breeding. Finally, we provided our perspectives on fish carotenoid pigmentation research and the aquatic industry. This review will enhance our understanding of fish carotenoid metabolism as well as provide deeper insights into the molecular mechanism of fish muscle and skin pigmentation. It will benefit the production of feed additives and selective breeding for ornamental aquatic animals.</p>\u0000 </div>","PeriodicalId":227,"journal":{"name":"Reviews in Aquaculture","volume":"17 2","pages":""},"PeriodicalIF":8.8,"publicationDate":"2025-03-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143622579","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
David Tapia, Daniel Gomez-Uchida, Ale Garin-Fernandez, José M. Yáñez, Yoanna Eissler, Cristian B. Canales-Aguirre
{"title":"Viral Pathogens in Free-Living Salmonids: Aquaculture and Ecosystem Implications","authors":"David Tapia, Daniel Gomez-Uchida, Ale Garin-Fernandez, José M. Yáñez, Yoanna Eissler, Cristian B. Canales-Aguirre","doi":"10.1111/raq.70007","DOIUrl":"https://doi.org/10.1111/raq.70007","url":null,"abstract":"<div>\u0000 \u0000 <p>Salmonids play vital ecological and economic roles and have been introduced to many regions worldwide. When not held captive in farms, they can be classified as free-living salmonids, a group that includes native, feral, and naturalized populations, as well as fish that have escaped from aquaculture facilities. Compared to farmed salmonids, knowledge of viral infections affecting free-living populations remains limited, creating a significant gap in understanding the ecological impacts of interactions between aquaculture and natural ecosystems. To address this knowledge gap, we reviewed global reports and summarized the information on viruses infecting free-living salmonids. Most viral detections reported in the reviewed studies were found in native wild salmonids, with escaped salmon ranking second in detection frequency. Atlantic salmon (<i>Salmo salar</i>), sockeye salmon (<i>Oncorhynchus nerka</i>), and brown trout (<i>Salmo trutta</i>) were the most commonly reported host species. The most frequently reported viruses included infectious hematopoietic necrosis virus (IHNV), piscine orthoreovirus (PRV), infectious pancreatic necrosis virus (IPNV), and infectious salmon anemia virus (ISAV). Evidence from some studies suggests a bidirectional transmission of viruses between farmed and free-living salmonids, highlighting the complex interplay between these groups. Beyond their potential role as reservoirs for aquaculture pathogens, free-living salmonids may also be negatively impacted by viruses from farmed fish, contributing to the decline of native populations. By enhancing our understanding of the prevalence and impacts of viral infections in free-living salmonids, we can inform future research and management strategies to protect the health of both farmed and wild fish populations.</p>\u0000 </div>","PeriodicalId":227,"journal":{"name":"Reviews in Aquaculture","volume":"17 2","pages":""},"PeriodicalIF":8.8,"publicationDate":"2025-03-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143602667","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Maxine C. Canvin, Ana R. Borrero-Santiago, Tom Brook, Mollie Gupta, Jessica Knoop, Georgina Menage, Pippa J. Moore, Nessa E. O'Connor, Aurora M. Ricart, Dan A. Smale
{"title":"Can the Emerging European Seaweed Industry Contribute to Climate Change Mitigation by Enhancing Carbon Sequestration?","authors":"Maxine C. Canvin, Ana R. Borrero-Santiago, Tom Brook, Mollie Gupta, Jessica Knoop, Georgina Menage, Pippa J. Moore, Nessa E. O'Connor, Aurora M. Ricart, Dan A. Smale","doi":"10.1111/raq.70004","DOIUrl":"https://doi.org/10.1111/raq.70004","url":null,"abstract":"<p>Blue carbon habitats, which exhibit high rates of natural carbon sequestration, typically refer to salt marshes, seagrass meadows, and mangrove forests. Recent studies, however, have argued for the inclusion of seaweed-dominated habitats, like kelp forests, into blue carbon frameworks. Farmed seaweed may also function as a blue carbon habitat, with large-scale seaweed aquaculture suggested as a climate change mitigation strategy, but the evidence base remains limited. Here, existing knowledge on the mechanisms influencing carbon uptake, release, transport, and storage from kelp farms was synthesised, and a literature review was conducted to quantify associated rates of carbon sequestration. We identified strong geographical and methodological biases in the literature, with the majority of studies conducted in Asia and focusing on primary production rates as a proxy for carbon sequestration potential. Estimates of carbon release and storage rates were highly variable across locations, species, and approaches, and a scarcity of research on dissolved organic carbon, sedimentary carbon, and net ecosystem productivity was identified. Although the European kelp farming industry is in its infancy, it is predicted to expand to meet increasing demand for seaweed biomass. This is incentivised by perceived associated ecosystem service benefits such as enhanced carbon sequestration. However, multiple factors including environmental concerns, a lack of quantitative evidence, operational challenges, and regulatory complexities hinder industry expansion. Based on both the synthesised empirical evidence and an examination of key barriers and knowledge gaps, we identify future challenges and research priorities needed to assess the role of seaweed farming for climate change mitigation.</p>","PeriodicalId":227,"journal":{"name":"Reviews in Aquaculture","volume":"17 2","pages":""},"PeriodicalIF":8.8,"publicationDate":"2025-03-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/raq.70004","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143594914","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Md. Akibul Hasan Bakky, Peijun Yi, Ngoc Tuan Tran, Qian Sun, Ming Zhang, Yueling Zhang, Shengkang Li
{"title":"Polysaccharide-Induced Immunoregulation, Signaling Pathways, and Stress Mitigation in Aquaculture Animals: A Review","authors":"Md. Akibul Hasan Bakky, Peijun Yi, Ngoc Tuan Tran, Qian Sun, Ming Zhang, Yueling Zhang, Shengkang Li","doi":"10.1111/raq.70008","DOIUrl":"https://doi.org/10.1111/raq.70008","url":null,"abstract":"<div>\u0000 \u0000 <p>Aquaculture, encompassing the cultivation of diverse saltwater and freshwater fish and shellfish species, is rapidly expanding, driven by the pressing need for sustainable food production. However, intensified farming practices often lead to significant economic losses due to fish mortality from infectious diseases and stress-related conditions. Consequently, enhancing the immune responses of farmed species has become vital for sustainable management. This has encouraged a growing interest in natural and eco-friendly bioactive compounds as alternatives to synthetic chemicals for disease prevention. Among these, polysaccharides from various natural sources have emerged as promising candidates, administered through dietary inclusion, intraperitoneal injection, or immersion. As prebiotics, these polysaccharides enhance the immunity and overall health of aquaculture species by modulating both innate and adaptive immune responses, including lysozyme activity, phagocytosis, and cytokine production. This review critically examines the latest advances in polysaccharide-induced immunoregulation, highlighting their influence on key signaling pathways, which play pivotal roles in immune modulation. Additionally, the potential of polysaccharides to mitigate stress caused by environmental factors is discussed, demonstrating their ability to enhance growth performance and disease resistance. The collective findings underscore the value of polysaccharides as sustainable alternatives to antibiotics, aligning with the increasing consumer demand for antibiotic-free aquaculture products and supporting the advancement of global aquaculture sustainability.</p>\u0000 </div>","PeriodicalId":227,"journal":{"name":"Reviews in Aquaculture","volume":"17 2","pages":""},"PeriodicalIF":8.8,"publicationDate":"2025-03-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143565328","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Tom J. Hansen, Alison C. Harvey, Angelico Madaro, Aurélien Delaval, Kevin A. Glover, Monica F. Solberg, Thomas W. K. Fraser, Per Gunnar Fjelldal
{"title":"A Review on the Effects of the Doubled Maternal Genome in Triploids With a Suggested Pathway to Improving Their Performance in Aquaculture by Purging Deleterious Genes","authors":"Tom J. Hansen, Alison C. Harvey, Angelico Madaro, Aurélien Delaval, Kevin A. Glover, Monica F. Solberg, Thomas W. K. Fraser, Per Gunnar Fjelldal","doi":"10.1111/raq.70006","DOIUrl":"https://doi.org/10.1111/raq.70006","url":null,"abstract":"<p>Triploid fish are usually sterile, a trait which reduces unwanted sexual maturation in fish farming and eliminates the risk for negative genetic effects of escapees on wild stocks. The triploid state, normally established through a doubling of the maternal genome, consists of two chromosome sets from the mother and one from the father. The increase in genome size is accompanied by an increase in cell volume and reduction in cell number that are associated with physiological effects which have been described in several studies. The doubled maternal genome is also mirrored in the triploid phenotype whereby meristic characters, growth, and physiology, are commonly biased towards that of the dam. However, chromosome doubling techniques are also known to give strong inbreeding effects. In meiotic gynogenes, this is seen in fitness-related traits such as reduced survival, especially during early life, an increase in deformities, and lower growth. The same effects on fitness, although to a milder degree, are seen in triploids, which supports the hypothesis that they are also affected by inbreeding. Producing triploids by interploidy alleviate the inbreeding problem as the tetraploids can be crossbred to increase their heterozygosity. However, producing tetraploid broodstocks is both challenging and time and resource demanding. An alternative approach is to establish a triploid founder broodstock through one generation of gynogenesis. The gynogenesis will eliminate the lethal alleles, and by selecting the best performing individuals from the best performing families, one will also partially eliminate recessive deleterious alleles, increasing the fitness of the resulting triploid population.</p>","PeriodicalId":227,"journal":{"name":"Reviews in Aquaculture","volume":"17 2","pages":""},"PeriodicalIF":8.8,"publicationDate":"2025-03-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/raq.70006","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143554457","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Mohamed B. Codabaccus, Tara R. Kelly, Quinn P. Fitzgibbon, Chris G. Carter, Gregory G. Smith
{"title":"The Nutritional Aspects of Cannibalism in Crustacean Aquaculture: With Emphasis on Cultured Tropical Spiny Lobsters","authors":"Mohamed B. Codabaccus, Tara R. Kelly, Quinn P. Fitzgibbon, Chris G. Carter, Gregory G. Smith","doi":"10.1111/raq.70005","DOIUrl":"https://doi.org/10.1111/raq.70005","url":null,"abstract":"<p>Cannibalism in high-value crustacean species, such as mud crab, clawed lobster, and spiny lobster, is a major impediment to commercial aquaculture due to its significant impact on survival and, hence, production. Knowledge of the nutrition acquired from consuming conspecifics may inform whether nutrient limitation is a primary reason for cannibalism, and if so, assist with feed formulation to prevent cannibalism. While feed shortages are usually not a limitation in aquaculture, nutrient limitation due to inefficient feed intake should not be disregarded, especially with formulated feeds. Additionally, unique nutrients may be absent from formulated feeds, the deficit of which may play a role in triggering cannibalism. The reasons for cannibalism in crustacean aquaculture are still unclear and possibly involve several factors, including feed availability, population density, life stages, resource competition, and prey vulnerability. In general, various forms of cannibalism exist that may have multiple drivers, including nutritional (e.g., state of hunger and lack of specific nutrient), behavioral (e.g., mating and aggression), ecological (e.g., population structure) and environmental (e.g., space limitation). In crustaceans, cannibalism occurs generally when animals are vulnerable; this may coincide with moulting events or through the lack of habitat complexity or density restrictions. The simultaneous occurrence of multiple factors influencing cannibalism in crustacean culture constitutes a major challenge for evaluating the relative significance of nutrition to cannibalism. In this review, we examine cannibalism, its drivers, and its relationship to nutrition in numerous terrestrial and aquatic species, with emphasis on crustaceans, particularly the tropical spiny lobster, <i>Panulirus ornatus</i>.</p>","PeriodicalId":227,"journal":{"name":"Reviews in Aquaculture","volume":"17 2","pages":""},"PeriodicalIF":8.8,"publicationDate":"2025-02-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/raq.70005","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143497212","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Jordan Pennells, Michael Salini, Artur Rombenso, Cedric Simon, Danyang Ying
{"title":"The State-of-the-Art of Aquafeed Extrusion: Mechanisms, Challenges and Opportunities","authors":"Jordan Pennells, Michael Salini, Artur Rombenso, Cedric Simon, Danyang Ying","doi":"10.1111/raq.70002","DOIUrl":"https://doi.org/10.1111/raq.70002","url":null,"abstract":"<p>To sustain the expanding volume of aquaculture production, there is significant demand for an affordable supply of energy and nutrients to aquatic species. High-quality feed is essential to ensure the productivity, sustainability and economic viability of aquaculture systems. Over the past 30–40 years, extrusion technology has emerged as an efficient method to produce high-quality feed with enhanced functional attributes, such as digestibility, palatability, buoyancy and water stability. This review provides a comprehensive overview of the current state-of-the-art in aquafeed extrusion, highlighting the mechanisms underpinning extrusion technology, challenges for industrial production and future opportunities in this field. Through bibliometric analysis, we examine the evolution of aquaculture feeding techniques and their impact on feed quality and fish growth performance. Comparisons between pelletised and extruded feeds highlight advancements in extrusion methods, which offer superior nutrient retention and feed conversion efficiency. We elucidate the scientific principles of feed extrusion, including the effects of temperature, moisture and mechanical energy on feed properties. Despite significant progress, key challenges remain for the production of extruded feed, such as ingredient variability, operational complexity, diverse product requirements and waste management. Conversely, we explore opportunities for extrusion technology, emphasising predictive characterisation, extrusion modelling, and AI-driven quality control. The review concludes with a perspective of the industrial context, discussing the commercial drivers for aquafeed milling, insights from industry stakeholders and future directions for commercial research and development. This review offers researchers, technologists and industry stakeholders a comprehensive understanding of the current landscape, challenges and future prospects for extruded aquafeed production.</p>","PeriodicalId":227,"journal":{"name":"Reviews in Aquaculture","volume":"17 2","pages":""},"PeriodicalIF":8.8,"publicationDate":"2025-02-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/raq.70002","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143489861","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Stanley Iheanacho, Stéphanie Céline Hornburg, Carsten Schulz, Frederik Kaiser
{"title":"Knowledge Gaps Concerning Bioactive Compounds in Fish Feed","authors":"Stanley Iheanacho, Stéphanie Céline Hornburg, Carsten Schulz, Frederik Kaiser","doi":"10.1111/raq.70009","DOIUrl":"https://doi.org/10.1111/raq.70009","url":null,"abstract":"<p>Meeting the nutritional demands of aquaculture species is essential for efficient and, thus, sustainable feed production. Fishmeal unquestionably represents an excellent source of quality protein, essential amino acids, polyunsaturated fatty acids, vitamins, minerals, nutraceuticals (phytochemicals antioxidants), and bioactive compounds (peptides, nucleotides, and creatine) [<span>1</span>]. However, the economic and environmental constraints of using fishmeal in fish diets are significant [<span>2</span>]. Therefore, previous and ongoing research has dramatically changed feed formulations, replacing fishmeal with various alternatives, including plant- and animal-based proteins, insect meals, and microbial protein [<span>2</span>]. However, research activities have mainly focused on aligning and optimizing the nutrient composition of fish feeds when integrating fishmeal alternatives, and thus, for instance, recommendations of dietary inclusion rates of bioactive feed compounds still vary dramatically in the literature (Table 2). Further, some fishmeal alternatives lack or are deficient in bioactive compounds (Table 1) that are considered important for fish health and growth [<span>32</span>], and thus need substitution. It is crucial to enrich scientific data about the nutritional implications of bioactive compounds in fish feeds in addition to protein, fat, and energy content, amino acid, or fatty acid profiles to provide valuable recommendations for nutritionists. Consequently, this paper aims to highlight the knowledge gaps for capturing the full potential of bioactive compounds in diets containing fishmeal alternatives. While extensive literature exists for some bioactive compounds like cholesterol and some minerals, our study considered bioactive compounds (Table 1) that are underreported, particularly with regard to their effective dietary inclusion rates, species requirements, life stages, and specific effects (e.g., nucleotides and glycosaminoglycans).</p><p>Bioactive compounds are naturally occurring chemical substances found in small quantities in plants, animals, or other living organisms that have biological effects on cells or organisms [<span>33</span>]. The bioactive compounds considered in this paper (Table 1) are found in fishmeal in high amounts and are limited or not present in several fishmeal alternatives [<span>34</span>]. Additionally, they have known effects on fish but lack critical information for their effective and safe application in aquafeed (Table 2). In our analysis, we focused on two key plant-based proteins used in commercial fish feeds (soybean and rapeseed protein), two animal-based protein sources (blood meal and feather meal), and two novel feed ingredients that are discussed for their potential in sustainable feed production (insect and microbial protein).</p><p><b>Trimethylamine oxide</b> is a non-protein nitrogen compound naturally occurring in fish (Table 1). TMAO is sparsely studied but is reported to","PeriodicalId":227,"journal":{"name":"Reviews in Aquaculture","volume":"17 2","pages":""},"PeriodicalIF":8.8,"publicationDate":"2025-02-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/raq.70009","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143489930","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Jindřich Novák, Dieter Hohl, Martin Stuchlík, Jaroslav Hofmann, Michael F. Tlusty, André Lincoln Barroso Magalhães, Alberto Maceda-Veiga, Surya Gentha Akmal, Gen Hua Yue, Pradeep Kumkar, Sean M. Marr, Joseph R. Sara, Nir Stern, Andrew L. Rhyne, James M. Furse, Lukáš Kalous, Jiří Patoka
{"title":"Revisiting the History of Ornamental Aquaculture in Europe to Understand the Benefits and Drawbacks of Freshwater Fish Imports","authors":"Jindřich Novák, Dieter Hohl, Martin Stuchlík, Jaroslav Hofmann, Michael F. Tlusty, André Lincoln Barroso Magalhães, Alberto Maceda-Veiga, Surya Gentha Akmal, Gen Hua Yue, Pradeep Kumkar, Sean M. Marr, Joseph R. Sara, Nir Stern, Andrew L. Rhyne, James M. Furse, Lukáš Kalous, Jiří Patoka","doi":"10.1111/raq.13008","DOIUrl":"https://doi.org/10.1111/raq.13008","url":null,"abstract":"<p>Ornamental aquaculture and fishkeeping are very popular with millions of enthusiasts worldwide. The number of newly imported fish species for ornamental purposes grew slowly from World War I until the 1980s. It then exponentially increased until now with more than 7900 species and a large number of scientifically undescribed morphotypes. Here we present the first comprehensive review of freshwater and brackish fish importations during the boom of ornamental fish keeping at the turn of the Millennium and discuss this with a cultural and socio-economic lens in the European context. The increase in imports accelerated following the availability of air transport and the end of the Cold War. From the list of traded species, the largest number of species imported for ornamental purposes was found in the following groups: armored loricariid catfish (family Loricariidae), cory catfish (family Callichthyidae, subfamily Callichthyinae), cichlids of African Great Lakes (order Cichliformes), killifish (egg-laying species of the order Cyprinodontiformes), and characids (order Characiformes). These taxa represent ca. 74% of all fresh and brackish water ornamental fish species. The species of fish with the ability to absorb atmospheric oxygen (e.g., Belontidae, including gouramis and bettas) have dominated the market, but their ratio to the other species has declined during the modern era of ornamental aquaculture (after the end of WWI). By identifying the most popular aquarium species traded through the history of the aquarium trade, our findings aim to guide present-day management of ornamental aquaculture and better inform invasion risk assessments.</p>","PeriodicalId":227,"journal":{"name":"Reviews in Aquaculture","volume":"17 2","pages":""},"PeriodicalIF":8.8,"publicationDate":"2025-02-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/raq.13008","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143475562","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}