Papageorgiou, N.K. (1979) The length weight relationship, age, growth and reproduction of the roach Rutilus rutilus (L.) in Lake Volvi. J. Fish. Biol., pp. 529-538
| Species | Development state | Trait | Primary Data | Secondary Data |
| Rutilus rutilus | Female | Age at sexual maturity | 2+ | 2.0 year |
| Rutilus rutilus | Female | Length at sexual maturity | 11-12 [Smallest mature female 10.6 cm long] | 11.5 cm |
| Rutilus rutilus | Female | Weight at sexual maturity | 14.60 ± 0.61 g !! [Smallest mature female 11.7 g] | 14.6 kg |
| Rutilus rutilus | Female | Relative fecundity | 90-172 | 131.0 thousand eggs/kg |
| Rutilus rutilus | Female | Absolute fecundity | 0.92-32.810, with a mean of 9.2 | 16.87 thousand eggs |
| Rutilus rutilus | Female | Maximum GSI value | Between 9.03 up to 16.67 increase with the age of female [7.35 for the smallest mature female] | 9.03 percent |
| Rutilus rutilus | Male | Age at sexual maturity | 1+ | 1.0 years |
| Rutilus rutilus | Male | Length at sexual maturity | Smallest mature male 7.4 cm long | 7.4 cm |
| Rutilus rutilus | Male | Weight at sexual maturity | Smallest mature male 3.78 g !! | 3.78 kg |
| Rutilus rutilus | Male | Maximum GSI value | 9.7-11.07, quite constant during the life of male | 10.38 percent |
| Rutilus rutilus | Spawning conditions | Spawning migration period | Early March, the roach started moving to the spawning ground which occur during the first half of April | ['March', 'April'] |
| Rutilus rutilus | Spawning conditions | Spawning season | First half of April | ['April'] |
| Rutilus rutilus | Spawning conditions | Spawning temperature | Spawning after the water has reached 10°C | 10.0 °C |