Svedang, H. and Neuman, E. and Wickstrom, H. (1996) Maturation patterns in female European eel: age and size at the silver stage. Journal of fish biology, pp. 342-351
| Species | Development state | Trait | Primary Data | Secondary Data |
| Anguilla anguilla | Female | Age at sexual maturity | 12-18, means in different areas | 15.0 year |
| Anguilla anguilla | Female | Length at sexual maturity | Means of 60.2-86.8, in various areas | 73.5 cm |
| Anguilla anguilla | Female | Weight at sexual maturity | Mean of 0.343-1.242, in various areas | 0.79 kg |