Saad, A. and Billard, R. (1987) Spermatozoa production and volume of semen collected after hormonal stimulation in the carp, Cyprinus carpio. Aquaculture,, pp. 67-77
| Species | Development state | Trait | Primary Data | Secondary Data |
| Cyprinus carpio | Male | Maximum GSI value | 6.9 ± 2.6 | 6.9 percent |