Successful aquaculture systems can reduce the pressure and help secure the most diverse and productive Red Sea coral reef ecosystem to maintain a healthy and functional ecosystem within a sustainable blue economy. Interestingly, recirculating aquaculture systems are currently emerging in fish farm production practices. On the other hand, monitoring and detecting fish behaviors provide essential information on fish welfare and contribute to an intelligent production in global aquaculture. This work proposes an efficient approach to analyze the spatial distribution status and motion patterns of juvenile clownfish \textit{(Amphiprion bicinctus)} maintained in aquaria at three stocking densities (1, 5, and 10 individuals/aquarium). The estimated displacement is crucial in assessing the dispersion and velocity to express the clownfish's spatial distribution and movement behavior in a recirculating aquaculture system. Indeed, we aim to compute the velocity, magnitude, and turning angle using an optical flow method to assist aquaculturists in efficiently monitoring and identifying fish behavior. We test the system design on a database containing two days of video streams of juvenile clownfish maintained in aquaria. The proposed displacement estimation reveals good performance in measuring clownfish's motion and dispersion characteristics leading to assessing the potential signs of stress behaviors. We demonstrate the effectiveness of the proposed technique for quantifying variation in clownfish activity levels between recordings taken in the morning and afternoon at different stocking densities. It provides practical baseline support for online predicting and monitoring feeding behavior in ornamental fish aquaculture.
翻译:成功的水产养殖系统可以减少压力,帮助确保红海珊瑚礁生态系统的多样性和生产力,以在可持续蓝色经济中维持一个健康和功能性生态系统。有趣的是,目前鱼类养殖生产实践中正在出现重新循环的水产养殖系统。另一方面,监测和探测鱼类行为提供了鱼类福利的基本信息,有助于全球水产养殖的智能生产。这项工作提出了一种有效的方法,用以分析在三个储量密度(1、5和10个个人/水族)中保存的幼小丑鱼的空间分布状况和运动模式。估计的迁移对于评估分散性和速度以表达小丑鱼的空间分布和移动行为至关重要。事实上,我们的目标是利用光学流法对速度、规模和角度进行比较,以帮助水生养殖者有效监测和查明鱼类行为。我们测试该系统在数据库中包含在赤道中保存的幼鸟视频流的系统设计。拟议中的迁移估计表明在测量小丑鱼的空间分布分布分布和速度的分布方面,在测量珊瑚礁空间分布分布的分布行为方面表现良好。我们打算利用光学流方法来对珊瑚礁的深度进行定量分析,以量化方式评估在珊瑚礁中进行在线喂养的潜力。