ISO 16541:2015规定了海洋有鳍鱼类养殖场的海虱计数方法和可在任何养殖区进行的海虱监测方法，以提供一致的海虱感染估计。 它规定了与监测海洋鳍鱼养殖场的海虱水平相关的最佳做法，用于各种目的，包括评估数量、流行率和治疗效果。这将包括确定特定监测项目要素的最低要求（例如，要取样的鱼和笼子数量、取样频率、记录的详细程度等）。它将适用于所有受到任何一种“海虱”（桡足类）寄生虫侵扰的海洋有鳍鱼养殖场。

ISO 16541:2015 specifies both a method for sea lice counts on marine finfish farms and a method for sea lice surveillance that can be carried out in any farming area to provide consistent estimates of sea lice infestation. It specifies the best practices associated with monitoring sea lice levels on marine finfish farms for various purposes including the assessment of abundance, prevalence, and treatment efficacy. This will include identifying minimum requirements for specific monitoring program elements (e.g. number of fish and cages to be sampled, frequency of sampling, the level of detail recorded, etc.). It will apply to all marine finfish farms which experience infestation with any of the range of "sea lice" (copepodid) parasites.