| Thông tin chủ yếu | Carpenter, K.E., 1988 |
| Mẫu | dioecism |
| Sự bón phân | external |
| Mating type | |
| Tần số đẻ trứng | |
| Spawning aggregation | Tài liệu tham khảo |
| Con vật sinh sản từng đợt | Tài liệu tham khảo |
| Loại cùng tái sinh sản |
nonguarders open water/substratum egg scatterers |
| Parental Care | none |
| Mô tả chu kỳ sống và tập tính ghép đôi | Mating behavior is marked by six distinguishable patterns, namely: 1) nuzzling; 2) several males joining in courtship; 3) spiraling towards the surface; 4) pair spawning; 5) sperm release by sneakers; and 6) post spawning. Nuzzling is done about 1-1.5 hours before spawning. For most of the day the fish swam slowly in school. At nearly spawning time, one or two males approach a selected female and begin pecking and pushing her swollen abdomen with their snouts. Interruption happens at this stage resulting in spawners returning to the school. With less than an hour until spawning, 2-6 males may attempt to get their abdomen as close to the female's abdomen as possible. For the pair that completes this position, a spiraling ascent to the surface occurs followed by a release of both eggs and sperm while other males come in pursuit. These sneakers release sperm at the same spot where the initial pair had released their gametes. Some spawnings may occur without sneakers getting involved in the process (Ref. 37498). |
| Tìm các tài liệu tham khảo khác về tái sinh sản | Scirus |