| Main Ref. | Whitehead, P.J.P., 1985 |
| Mode | dioecism |
| Fertilization | external |
| Mating type | |
| Spawning frequency | throughout the year, but peaking once |
| Spawning aggregation | Ref. |
| Batch spawner | Ref. |
| Reproductive guild |
nonguarders open water/substratum egg scatterers |
| Parental Care | none |
| Description of life cycle and mating behavior | Breeds mainly in rivers, upstream to about 50 km or even over 1000 km as in the Ganges (younger fishes may breed in the tidal zone of rivers). In some rivers the migration is restricted by barrages; there is some evidence that hilsa far up the Ganges and other large rivers, although migrating upstream to spawn, are permanent river populations that do not descend to the sea. The main breeding season is during the southwest monsoon, with a shorter season from January to February or March. |
| Search for more references on reproduction | Scirus |