From: Maturation at a young age and small size of European smelt (Osmerus eperlanus): A consequence of population overexploitation or climate change?
Year/month
No. of analysed individuals
No. of maturing individuals
1958/Nov.
85
0
1965/Oct.
53
1
1967/Oct.
171
1974/Nov.
13
1978/Oct.–Dec.
412
1979/Oct.
100
1980/Oct.
183
2012/Nov.–Dec.
634
139
Sum
1651
140