We present a novel, low-footprint and low-cost semi-automatic system for delivering solid and liquid food to zebrafish, and more generally to aquatic animals raised in racks of tanks. It is composed of a portable main module equipped with a contactless reader that adjusts the quantity to deliver for each tank, and either a solid food module or a liquid food module. Solid food comprises virtually any kind of dry powder or grains below 2 mm in diameter, and, for liquid-mediated food, brine shrimps (Artemia salina) and rotifers (Rotifera) have been successfully tested. Real-world testing, feedback, and validation have been performed in a zebrafish facility for several months. In comparison with manual feeding this system mitigates the appearance of musculoskeletal disorders among regularly-feeding staff, and let operators observe the animals' behavior instead of being focused on quantities to deliver. We also tested the accuracy of both humans and our dispenser and found that the semi-automatic system is much more reliable, with respectively 7-fold and 84-fold drops in standard deviation for solid and liquid food.

中文翻译：

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用于水产设施中固体和液体食品的半自动分配器。

我们提出了一种新颖的，占地面积小，成本低的半自动系统，该系统可将固体和液体食物输送到斑马鱼，更广泛地输送到在水族箱中饲养的水生动物。它由一个便携式主模块和一个固体食物模块或一个液体食物模块组成，该便携式主要模块配备有非接触式读取器，该读取器可调整每个储罐的输送量。固体食物实际上包括直径小于2毫米的任何种类的干粉或谷物，并且对于液体介导的食物，已经成功测试了盐水虾（卤虫）和轮虫（轮虫）。在斑马鱼工厂中进行了几个月的真实测试，反馈和验证。与手动饲喂相比，该系统减轻了定期饲喂人员肌肉骨骼疾病的出现，并让操作员观察动物的 行为，而不是专注于交付数量。我们还测试了人类和我们分配器的准确性，发现半自动系统更加可靠，固体和液体食品的标准偏差分别下降了7倍和84倍。