Abstract The L46 (Hypancistrus zebra) stands out as one of the most valuable Amazonian species in the international market for ornamental fish and faces a notable problem: the risk of extinction versus the demand for new specimens for aquariums. Considering that breeding in captivity can be a conservational tool for aquatic species and an alternative source for generating income, the objective of the present paper was to verify the economic feasibility of producing H. zebra in recirculation aquaculture systems (RAS), in different scenarios of rearing: residential breeding (S1), mid-size store production (S2) and large-scale production as a supplier (S3). The main profitability indicators used were: net present value (NPV), internal rate of return (IRR) and payback period (PP). The selling price per unit was fixed in US$260.15 (S1/S2) and US$156.09 (S3). The largest investments were made with the acquisition of broodstocks (S1/S2) and property (S3), while the highest costs were with labor (S2/S3) and taxes (S1). Only S1 demonstrated economic profitability (NPV 8.50% = US$28,187.85; IRR = 74.71%; PP = 1.80 years). Conclusion: the production in this study appeared to be profitable on smaller scales, however the profitability of large-scale production depends upon reducing expenses and increasing the selling price.

中文翻译：

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在循环水产养殖系统中生产帝王斑马（Hypancistrus zebra）的经济可行性：一种极度濒危观赏鱼的替代品

摘要 L46（Hypancistrus zebra）是国际观赏鱼市场上最有价值的亚马逊物种之一，面临着一个显着的问题：灭绝的风险与对水族馆新标本的需求。考虑到人工养殖可以成为水生物种的保护工具和创收的替代来源，本文的目的是验证在循环水产养殖系统 (RAS) 中生产斑马斑马的经济可行性，在不同的情景下饲养：住宅养殖（S1）、中型商店生产（S2）和作为供应商的大规模生产（S3）。使用的主要盈利指标是：净现值（NPV）、内部收益率（IRR）和投资回收期（PP）。每单位售价固定为 260.15 美元（S1/S2）和 156 美元。09 (S3)。最大的投资是购买亲鱼 (S1/S2) 和财产 (S3)，而最高的成本是劳动力 (S2/S3) 和税收 (S1)。只有 S1 表现出经济盈利能力（NP​​V 8.50% = 28,187.85 美元；IRR = 74.71%；PP = 1.80 年）。结论：本研究中的生产在较小规模上似乎有利可图，但大规模生产的盈利能力取决于减少费用和提高销售价格。