Year Number of fish sampled Number aged Number not readable Percent not readable Age of females (mean ± SD; years) Length of females (mean ± SD; cm) Number of eels in OUI level 1, 2, and 3 respectively Age of males (mean ± SD; years) % of males
1980s 326 282 22 7% 19±4 60±7 28/107/147 14±4 8%
1990s 336 304 12 4% 19±5 63±11** 54/159/91 15±3 5%
2010s 136 129 7 5% 21±4* 68±7** 11/74/44 none 0
SUM 798 757 41 5% 19 15 5% (7% excluding the 2010s)