Condition factor of pike
In total, we caught 55 pike, 31 individuals upstream and 24 individuals downstream of the dam. From scale annuli, we were able to clearly identify age-0 pike (N = 35), but for other cohorts, age identification was not so clear and we pooled all adult individuals < age 0. Condition factor of age-0 pike individuals was significantly higher downstream of the dam (0.64 ± 0.12, average ± SD), compared to individuals upstream of the dam (0.54 ± 0.05; Z = 11.33, P < 0.0001). Similarly, condition factor of adult pike individuals > age 0 was significantly higher downstream of the dam (0.68 ± 0.08, average ± SD), compared to individuals upstream of the dam (0.60 ± 0.04; Z = 6.325, P = 0.012).