International Journal of Marine Science, 2025, Vol.15, No.1, 28-34 http://www.aquapublisher.com/index.php/ijms 32 5.2 The promotion of genetic testing technology is difficult Although genetic testing technology is very advanced, it faces many obstacles when applied in grassroots units. These technologies require expensive equipment and professional talents, which many local institutions find difficult to afford (Xiong et al., 2018; Xu et al., 2021). Therefore, most conservation projects are still using traditional observation methods, although these methods are not accurate enough. This technological gap also leads to uneven data quality in different regions, affecting the formulation of unified monitoring standards. To change this situation, it is necessary to reduce technical costs, strengthen personnel training and develop more convenient operation methods (Xiong et al., 2018; Xu et al., 2021). 5.3 The research data are scattered and difficult to integrate At present, research data on local fish are scattered among various institutions and lack unified management. This situation has led to a lot of repetitive studies and also resulted in differences in species records (Xiong et al., 2018; Xu et al., 2021; Zhang et al., 2023). The absence of a data sharing mechanism is not only detrimental to scientific research cooperation but also affects long-term monitoring work. It is very important to establish a comprehensive database. This database should contain the morphological characteristics, genetic information and ecological data of fish, facilitating the use of researchers and managers (Xiong et al., 2018; Xu et al., 2021; Zhang et al., 2023). Establishing such a sharing platform is a key issue that needs to be addressed in the future. 6 Future Work Priorities and Improvement suggestions 6.1 Improve species surveys and data collection Further expand the fish sampling areas in Hainan and the South China Sea region to reveal the biodiversity of wild fish. Due to the limited investigation area and seasonal influence, information on many endemic and rare fish species is still missing (Xiong et al., 2018; Xi et al., 2022; Zhang et al., 2023; Wang et al., 2024). It is suggested to adopt new detection techniques such as eDNA for systematic investigation, which will help establish a more complete list of species and outline the basic data (Xi et al., 2022; Wang et al., 2024). Meanwhile, attention should be paid to the construction of the localized database. The ideal database should contain comprehensive information such as species classification, genetic characteristics and distribution areas, facilitating researchers' query and use (Xi et al., 2022; Wang et al., 2024). This resource sharing platform will significantly enhance the standardization and convenience of fish research. 6.2 Develop practical detection technologies It is necessary to focus on developing an economical detection solution suitable for use at the grassroots level. Although genetic testing technology has good effects, its high cost limits its widespread application (Zhang et al., 2023; Wang et al., 2024). It is suggested to develop a detection toolkit that is easy to operate and low-cost, so that more local institutions can participate in species monitoring. It can be considered to combine new technologies with traditional methods and improve the technical level of grassroots personnel through professional training. This way, not only can the quality of detection be guaranteed, but also the scope of participation can be expanded to achieve more comprehensive biodiversity conservation (Zhang et al., 2023; Wang et al., 2024). 6.3 Establish a multi-party cooperation mechanism It is suggested to establish a cross-regional collaboration platform to integrate resources from all parties. At present, the research data are scattered among different institutions and lack effective sharing channels (Xiong et al., 2018; Zhang et al., 2023; Wang et al., 2024). By establishing a cooperative network that includes scientific research institutions, government departments and protection organizations, information sharing and method unification can be promoted. Through this collaborative platform, standardized databases can be established, protection actions can be coordinated, and new challenges brought about by environmental changes can be addressed. Multi-party
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