Dubost, N. and Masson, G. and Moreteau, J.-C. (1997) Gonad development and filleting yield of common carp Cyrpinus caprio L; reared in ponds in Eastern France. J. Appl. Ichthyol., pp. 15-20
| Species | Development state | Trait | Primary Data | Secondary Data |
| Cyprinus carpio | Female | Age at sexual maturity | In temperate climates, sexual maturity is reached at the age of 3-4 years | 3.5 year |
| Cyprinus carpio | Female | Oocyte development | Carp ovary development is asynchronous | Asynchronous |
| Cyprinus carpio | Female | Maximum GSI value | Maximum GSI values in female 17%, less than in other studies 29% | 17.0 percent |
| Cyprinus carpio | Male | Age at sexual maturity | In temperate climates, for males, spawning occurs during the second or third year of life | 2.0 years |
| Cyprinus carpio | Male | Maximum GSI value | Maximum GSI for males 11% less than in other studies 15% | 11.0 percent |
| Cyprinus carpio | Spawning conditions | Spawning release | Carp may spawn repeatedly during the same year if environmental conditions are favourable. Multiple maturation was confirmed by histological analysis | Multiple |