Raw data for the manuscript entitled "Long-term monitoring reveals scale/species-specific fish responses to hydrology and competition in a Mediterranean river"

Each row corresponds to a fish record — either an individually measured specimen (individuals = 1) or a cumulative count of unmeasured individuals from high-density catches (individuals > 1) — captured during electrofishing surveys at four sites along the Farfa River (2017–2026). Fields include: sampling date (date), species (species), sampling site (site), electrofishing pass (pass; 1 or 2), number of individuals (individuals), total length (TL, mm), weight (W, g), 30-day mean antecedent water level (H30avg, m), 30-day coefficient of variation of water level (H30cv), and standardized length-weight relationship residual used as individual body condition index (ResidLWR).</p>