Upper Brazos: Species size data

Individual size data (mm TL) for fish species collected at sampling sites on the Upper Brazos River, Texas (2022-2025). Measurements of TL for up to 30 individuals for all species present in standardized seining at each of 22 sites, monthly from September 2022 through August 2024, and seasonally for Fall 2025, Winter 2024/2025, and Spring and Summer 2025. Also individual lengths for fish species from sampling using mini-fyke nets and minnow traps at the same sites for a subset of sampling events. Components of research project "Population assessment of Smalleye (Notropis buccula) and Sharpnose (Notropis oxyrhynchus) shiners in the Brazos River and data-driven recommendations for long-term monitoring" funded by the Texas Comptroller of Public Accounts.