Scott, D.B.C. (1979) Environmental timing and the control of reproduction in fish. Sym. Zool. Soc. Lond., pp. 105-132
| Species | Development state | Trait | Primary Data | Secondary Data |
| Phoxinus phoxinus | Female | Onset of oogenesis | The GSI rises somewhat in autumn but remains static throughout the winter | ['January', 'February', 'March', 'October', 'November', 'December'] |
| Phoxinus phoxinus | Female | Intensifying oogenesis activity | Another increase occurs again in early spring, and finally a rapid increase takes place in late spring immediately prior to spawning | ['April', 'May', 'June'] |
| Phoxinus phoxinus | Female | Maximum GSI value | Mean 14, up to 16 [May] | 14.0 percent |
| Phoxinus phoxinus | Female | Resting period | August | 2.0 months |
| Phoxinus phoxinus | Female | Resting period | 2% [August] | 2.0 months |
| Phoxinus phoxinus | Spawning conditions | Spawning water type | Tributary streams | No category |