Main Ref. | Stevens, P.W., C.K. Bennett and J.J. Berg, 2003 |
Mode | dioecism |
Fertilization | external |
Mating type | |
Spawning frequency | two seasonal peaks per year |
Spawning aggregation | Ref. |
Batch spawner | Ref. |
Reproductive guild |
nonguarders open water/substratum egg scatterers |
Parental Care | none |
Description of life cycle and mating behavior | During breeding, a spawning aggregation composed at least of 3-4 individuals, probably 2-3 males to 1 female, were observed jumping and flying over the water surface, exuding ripe eggs and sperm in the process. Spawning on surface substrate (e.g. flotsam) when present is the usual reproductive mode but other modes may be employed if this substrate is not available. The fertilised eggs may remain suspended in the water surface during its development with the help of the small filaments on the egg surface and the adhesive filaments holding the egg mass together, by increasing the surface to volume ratio of the eggs, which aids in propping the eggs up in the water column. The eggs may also be suspended upon current or become benthic. |
Search for more references on reproduction | Scirus |