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Tiger puffer (Takifugu rubripes) is one of the most expensive farmed marine fish species in China. The high profitability of farmed tiger puffer is used to attract many new investors. However, some investments failed due to a lack of information about the tiger puffer fish farm business, poor farm and facility design, and flawed investment plans. To improve the investment efficiency and profitability of this industry, this analysis evaluated the economic performance of tiger puffer from eggs to harvest size using two different open-indoor combination aquaculture systems: a combination of recirculating aquaculture system and open net pen (RAS+ONP) and a combination of flow-through system and earth pond (FTS + EP). This analysis evaluated the financial performance of both systems using profit margin, net present value (NPV), internal rate of return (IRR), and payback period. At the same time, a sensitivity analysis was employed to measure economic risk. The results revealed that despite the RAS+ONP system being more economically profitable than the FTS + EP system, the financial indicators of the FTS + EP system granted a better economic performance in terms of NPV and IRR due to lower initial investment and operating costs. Meanwhile, the sensitivity analysis revealed that the economic performance of both systems was vulnerable to the fluctuations in fish prices and feed prices. The potential risk of earning profit was higher for the RAS+ONP if the feed price fluctuated compared to the FTS + EP system, while the risk was higher for the FTS + EP if the fish price fluctuated. Hence, the FTS + EP system could represent an opportunity for new entrants to obtain a more profitable production. [ABSTRACT FROM AUTHOR]

Changes in the consumption price of aquatic products will affect demand and fishermen's income. The accurate prediction of consumer price index provides important information regarding the aquatic product market. Based on the non-linear and non-smooth characteristics of fishery product price series, this paper innovatively proposes a fishery product price forecasting model that is based on Variational Modal Decomposition and Improved bald eagle search algorithm optimized Long Short Term Memory Network (VMD-IBES-LSTM). Empirical analysis was conducted using fish price data from the Department of Marketing and Informatization of the Ministry of Agriculture and Rural Affairs of China. The proposed model in this study was subsequently compared with common forecasting models such as VMD-LSTM and SSA-LSTM. The research results show that the VMD-IBES-LSTM model that was constructed in this paper has good fitting results and high prediction accuracy, which can better explain the seasonality and trends of the change of China's aquatic product consumer price index, provide a scientific and effective method for relevant management departments and units to predict the aquatic product consumer price, and have a certain reference value for reasonably coping with the fluctuation of China's aquatic product market price. [ABSTRACT FROM AUTHOR]

Public-private partnerships (PPPs) have emerged as an innovative model for the delivery of infrastructure and public services on a global scale. These collaborations, which unite businesses, governmental bodies, and civil society stakeholders, are actively advocated for their capacity to pool essential financial resources. Simultaneously, they offer a strategic approach to mitigating risks associated with sector-specific operations and addressing intricate developmental challenges. PPPs leverages wider resources and capabilities and could have greater impacts, which have been widely adopted in various sectors such as infrastructure, health, education, and environment. In recent years, PPPs have also emerged as a promising tool to promote the development of aquaculture sector, which is the fastest growing food production sector in the world. However, PPPs in aquaculture sector have yet not to be widely adopted or well understood. We address this research gap by describing a successful PPP model in aquaculture sector based on a case study of Hani Terrace integrated rice-fish farming system in China. This research analyzes the type, structures, partner roles and partnership of the Hani Terrace PPP model, and it also examines the major challenges encountered and the development outcomes achieved by these projects. The results showed that the Aquaculture PPP created positive outcomes for different parterners and stimulated increased economic, social and environmental benefits from targeted interventions. This research intends to offer valuable insights and recommendations for policymakers, practitioners, researchers, and local communities keen on advancing the PPP model within the aquaculture sector. Additionally, the research identifies gaps and outlines directions for future studies in PPP development in the aquaculture sector. The research results seek to enhance the comprehension of all stakeholders involved in crafting successful PPP initiatives and improving service delivery. • Public-private partnerships (PPPs) have emerged as an innovative model and a promising tool to promote the development of aquaculture sector, involving government entities, private companies, research institutes, and farmers, contributes financial resources, expertise, innovation, and proficiency in managing intricate social processes. • Forming a successful partnership necessitates the establishment of shared objectives and the development of robust business cases. • This case study aligns with global research on aquaculture PPPs and highlights the importance of collaborative partnerships, financing structures, and equitable resource distribution for success in aquaculture development. They need to set common goals and strong business cases aiming to align the interests and risks of public and private partners. [ABSTRACT FROM AUTHOR]

Background Aquatic products processing industry (APPI) in China has been developing for several decades and is becoming a pillar sector in China's fisheries industry. There are some problems in the development of this industry, such as significantly lower-than-world-average APP ratio, improper regional structures, weakly development in freshwater products processing, and lower profit margin from processing. Scope and approach This study aims to provide a whole picture of China's aquatic products processing (APP) Industry. It also describes an overview of the development of aquatic product industry and evolutions of policies and regulation in China. Key findings and conclusions The findings indicated China's Aquatic product industry has progressed significantly in the past decades. The total products of the APPI gradually increased from 0.6 million tons in 1978 to 20 million tons in 2014. The ratio between aquatic products processing output and aquatic products output rose from 0.13 in 1996 to 0.32 in 2014, and the number of processing firms substantially increased during this period. Since 2004, the quality of the APPI gradually improved, and the APPI value-added rate increased from 29.76% in 2004 to 37.28% in 2014. Some remarkable issues still exist in the process of APPI. Further policies need to focus on better industrial development planning, favorable tax for intensive processing sectors, as well as reinforced R&D and policy supports. [ABSTRACT FROM AUTHOR]

Aquaculture is threatened by the climate change which includes changes in temperature, precipitation, drought, storms and floods. The socio-economic impacts of climate change on aquaculture are difficult to assess due to the uncertainties regarding the extent and rate of predicted changes. By including bond indexes as climate change variables, this study constructed a provincial-level panel data set to estimate the profits and productivity of the Chinese aquaculture. Results indicate that aquaculture production has heterogeneous responses to climate change. However, the majority of climate variables, including extreme weather events and long-term climate changes, strongly affect aquaculture profits. Future research needs to focus on designing suitable adaptation measures in an interdisciplinary setting to address the challenges from natural risks and economic volatility. [ABSTRACT FROM AUTHOR]

Studies on food supply values, the basis of eco-service values, and their factors of different pond aquaculture ecosystems are helpful to explain the influences of the inputted factors and their variations among these ecosystems and provide information for stakeholders to adjust their decisions and behaviors to increase their total eco-service values. On the basis of continued records from 2011 to 2012 of 18 ponds of three pond aquaculture ecosystems, namely Litopenaeus vannamei, Macrobrachium nippponensis and carp fresh water pond aquaculture ecosystems in Qingpu, Fengxian, and Jiading, three suburban districts of Shang, this paper analyzed the costs, returns, net food supply values and their regional and temporal fluctuations. The results showed that: (1) the net food supply values of the three ecosystems are 143252.4, 135883.7, and 52623.1Yuan/Ha in 2011 correspondently, with the Litopenaeus vannamei pond aquaculture ecosystem (LVPAE) ranking highest and the carp pond aquaculture ecosystem (CPAE) lowest among them, and the trend was same in 2012, but the values decreased than that of 2011 with the rate of 30.0%( LVPAE), 38.0 %( Macrobrachium nippponensis pond aquaculture ecosystem, MNPAE) and 13.7 %( CPAE). (2)The dominant factors of the net food supply values of these ecosystems are the produce price and variable costs; fry and feed costs are the main variable factors producing the noticeable difference among the ecosystems. (3) The cost-benefit ratio of per unit product of the CPAE, LVPAE and MNPAE changed from 27.5%,91.7%,129.0% in 2011 to 23.0%,73.8% and 63.8% in 2012, with the CPAE ranked lowest among them in both years.(4) For all the three ecosystems, their net food supply values may not always change in same trends with their net eco-service values, if stakeholders want to keep an balance between these two types of values, MNPAE should be encouraged in these districts. [ABSTRACT FROM AUTHOR]

Offshore aquaculture plays an important role in alleviating the pressure of coastal aquaculture and promoting the sustainable development of fisheries. And changes in ocean conditions caused by climate change will have a huge impact on mariculture. Considering the conditions of climate change, this study took the main mariculture fishes in China as the research object, used a species distribution model (SDM) to predict the potential mariculture areas of each fish under the current and different future (2040–2050) climate scenarios, divided the mariculture areas into three potential levels by natural breaks classification method, and calculated the area of different levels potential areas of each fish through the grid number and grid unit area. Additionally, this paper compares the potential area variation of different fishes under different climate scenarios. The results indicate that: (1)In the current climate, the potential area of Yellowtail kingfish(Seriola lalandi) is the largest among seven fishes, estimated at 1,288,500 km2. And the number of varieties suitable for aquaculture in the East China Sea and the South China Sea is more than that in the Bohai and Yellow Seas. (2)Compared with the high potential area of current and future climate scenarios, Large yellow croaker(Larimichthys crocea) has the largest increase, Yellowtail kingfish(Seriola lalandi) decreases under all four future climate scenarios, and both Cobia(Rachycentron canadum) and Allied Kingfish(Seriola dumerili) has small changes. (3)In the future climate scenarios, the number of species potentially suitable for culturing increases significantly in the Bohai and Yellow Sea area, and in the South China Sea, the suitable areas for cultured Large yellow croaker(Larimichthys crocea), gold pompanos(Trachinotus ovatus), Cobia(Rachycentron canadum) and Allied Kingfish(Seriola dumerili) decrease significantly. Overall, the potential areas of each fish show a northward trend. • We forecasted the potential areas of offshore finfish aquaculture in China • Mapping the distribution of offshore finfish aquaculture in China under current and future climate scenarios • Provides information for the selection of the offshore aquaculture species and the sea area planning in China • Provides information on the development direction for China's offshore aquaculture in response to climate change [ABSTRACT FROM AUTHOR]