The Piscine Stream Community Estimation System (PiSCES) provides users with a hypothesized fish community for any stream reach in the conterminous United States using information obtained from Nature Serve, the US Geological Survey (USGS), StreamCat, and the Peterson Field Guide to Freshwater Fishes of North America for over 1000 native and non-native freshwater fish species. PiSCES can filter HUC8-based fish assemblages based on species-specific occurrence models; create a community abundance/biomass distribution by relating relative abundance to mean body weight of each species; and allow users to query its database to see ancillary characteristics of each species (e.g., habitat preferences and maximum size). Future efforts will aim to improve the accuracy of the species distribution database and refine/augment increase the occurrence models. The PiSCES tool is accessible at the EPA's Quantitative Environmental Domain (QED) website at https://qed.epacdx.net/pisces/

使用从自然服务，美国地质调查局（USGS），StreamCat和《彼得森淡水鱼类田野指南》获得的信息，Piscine河川群落估计系统（PiSCES）为用户提供了一个假设的鱼类群落，可用于美国本土附近的任何河川。超过1000种本地和非本地淡水鱼物种。PiSCES可以根据特定物种的出现模型过滤基于HUC8的鱼类。通过将相对丰度与每种物种的平均体重相关联来创建群落丰度/生物量分布；并允许用户查询其数据库以查看每个物种的辅助特征（例如，栖息地偏好和最大大小）。未来的工作将旨在提高物种分布数据库的准确性，并完善/增强物种的出现模型。