| Main Ref. | Breder, C.M. and D.E. Rosen, 1966 |
| Mode | dioecism |
| Befruktning | external |
| Mating type | |
| Lekfrekvens | one clear seasonal peak per year |
| Spawning aggregation | Ref. |
| Leker upprepade gånger | Ref. |
| Reproductive guild |
nonguarders open water/substratum egg scatterers |
| Parental Care | none |
| Beskrivning av livscykel ochfortplantningsbeteende | Potamodromous species (Ref. 57765). In a natural environment, males reach sexual maturity at 9-1 5 years of age and females at 16-20 years (in water recirculation systems, sexual maturity can first occur at 5 years). Spawning happens in the summer and generally every two years. Membranes on eggs become increasingly more sticky after fertilization and this allows them to stick to the substratum. This can become a problem in nurseries, but it is solved by washing the eggs in clay or diatomaceous earth suspensions. Caviar (not fecundated ovocites ) can be over 1 0% of the corporal weight of a mature female. Incubation lasts about 1 6 days (at 10-1 5°). Larval development lasts about 20 days (at 18°). Egg size 3.0-3.6 mm, larval length at hatching 10-12 mm. |
| Sök efter fler referenser om reproduktion | Scirus |