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Consistent color preference of largefin longbarbel catfish (Mystus macropterus) across life stages: Implications for aquaculture

文献类型： 外文期刊

作者： Xiang, Miao 1 ; Liu, Haoran 1 ; Wei, Nian 1 ; Liao, Mulan 1 ; Chen, Siqi 1 ; Meng, Zihao 1 ; Zhu, Yongjiu 1 ; Yang, Deguo 1 ; Li, Xiaoli 1 ; Li, Xuemei 1 ;

作者机构： 1.Chinese Acad Fishery Sci, Yangtze River Fisheries Res Inst, Wuhan 430223, Peoples R China

2.Huzhou Univ, Coll Life Sci, Huzhou 313000, Peoples R China

关键词： Animal welfare; Aquaculture; Background color preference; Life-history stages; Mystus macropterus

期刊名称：AQUACULTURE （ 影响因子：3.9； 五年影响因子：4.4 ）

ISSN： 0044-8486

年卷期： 2025 年 608 卷

页码：

收录情况： SCI

摘要： This study systematically investigated the background color preferences of largefin longbarbel catfish (Mystus macropterus) at different life-history stages and assessed their potential applications in aquaculture practices. The study examined three key developmental stages: 0+, 1+ and 2+ years. It analyzed the selection behavior of M. macropterus in response to six distinct background colors (black, blue, red, white, yellow, and green). The results showed that M. macropterus exhibited a significant preference for black and blue backgrounds at all life-history stages, with this preference remaining consistent across different age groups. This finding challenges the prevailing view that fish color preferences change with life-history stage. Instead, it suggests that the color preferences of M. macropterus are closely related to their stable growth and reproductive strategies, supporting the idea that these preferences constitute a stable "fish personality" across life-history stages. Modulating environmental color is hypothesized to reduce intraspecific aggression in aquaculture environments, thereby providing a direct basis for mitigating aggression and facilitating high-density aquaculture through environmental design. These findings provide novel insights into the behavioral adaptations of M. macropterus and offer practical guidance for optimizing aquaculture environments. This study provides a scientific foundation for future aquaculture management strategies, suggesting that adjusting the background color of aquaculture ponds can simultaneously enhance fish welfare, production efficiency, and economic benefits.

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