| Fishbase |
| Country | Locality | Absolute Fecundity | Relative Fecundity | Fecundity/length relationship | ||||
| min | max | Min | Mean | Max | a | b | ||
| Europe | 1,000 | 1,500 | ||||||
| France | to be filled | 0 | 0 | 100 | 300 | |||
| Germany | Schleswig-Holstein | 0 | 0 | 1 | 1 | |||
| Greece | Aspropotamos stream (March 1981- February 1982) | 147 | 589 | 3 | 5 | 0.407383 | 2.39 | |