Cultured freshwater ornamental fish are primarily fed Artemia at early life stages. Development of alternative feeding strategies could decrease the Artemia reliance of ornamental producers, reduce labor costs, and improve industry resilience by diversifying larval feeding options. In this study, Corydoras aeneus, Synodontis eupterus, Synodontis nigriventris, Epalzeorhynchos bicolor, Pterophyllum scalare, and Trichogaster lalius larvae were offered one of four diets at first feeding: newly hatched Artemia or one of three microparticulate diets (MDs). After 14 days of feeding, survival and standard length (SL) were evaluated, and partial budget analyses (PBA) were conducted to evaluate the economic feasibility of replacing Artemia with MDs. For all species except E. bicolor, at least one MD performed as well as or better than Artemia with regard to the parameters in question. E. bicolor exhibited reduced survival when fed MDs compared to Artemia, although SL did not vary significantly among treatments. PBAs indicated that replacing Artemia with MDs at first feeding resulted in an average net benefit of $0.043 ± 0.004 for all species except E. bicolor, which resulted in a net cost of $0.048. These results indicate that MDs represent a physiologically and economically feasible alternative to Artemia for larval culture of many freshwater ornamental fishes.

中文翻译：

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与替代六种淡水观赏鱼幼虫养殖中的卤虫有关的幼虫生长，存活和部分预算分析

养殖淡水观赏鱼在生命的早期阶段主要以卤虫为食。通过多样化的幼体喂养方式，开发替代喂养策略可以减少观赏生产者对卤虫的依赖，降低劳动力成本，并提高行业适应力。在这项研究中，Corydoras aeneus，Synodontis eupterus，Synodontis nigriventris，Epalzeorhynchos双色，神仙鱼，以及Trichogaster lalius幼虫提供在第一送入四个饮食之一：刚孵出的卤虫或三种微粒饮食（MDs）中的一种。喂养14天后，评估了存活率和标准长度（SL），并进行了部分预算分析（PBA）以评估用MD替代Artemia的经济可行性。对于双色大肠埃希菌而言，就所涉及的参数而言，至少一种MD表现优于或优于Artemia。E.双色当馈送MD内相比表现出降低的生存卤虫，虽然SL没有处理间显著变化。PBAs表示，首次进食时用MD代替Artemia会导致除双色大肠杆菌以外的所有物种的平均净收益为$ 0.043±0.004 。，导致净费用为$ 0.048。这些结果表明，对于许多淡水观赏鱼的幼体养殖，MD代表了Artemia的生理和经济上可行的替代方案。