when can pygocentrus nattereri start to breed
- Thread starter The Real 118
- Start date
The Real 118;3269181; said:
From OPEFE:
The species is not sexually dimorphic. Breeders of piranhas in the home aquarium note visual differences between the sexes, but this scrutiny is limited to fish that are observed for a period of time, up to and including pre-spawning activity. Then some differences can be noted, but subtle due to such activity. References to body girth or coloration is limited to the female being full of roe and the male in pre-spawning colors. Other references to thickness of first ray of anal or body girth is inconsequential to visually attempt to determine sex when the fish are observed in the wild and in a large group. Therefore it is of no value in determining sexual morphs of the species. I have placed a few links to access breeding information being accomplished by hobbyists below. P. nattereri seems to have a type of courtship display that involves swimming in circles. This results in ventral-to-ventral interactions among the male and female. Eggs are placed in the sediment, in bowl shaped nests. These nests are around 4-5 cm in depth and 15 cm in diameter. The eggs are in clusters and are attached to the bottom vegetation. There may also be a relationship between the times of the spawning and the time of the wet season. (Uetanabaro et al. 1993). The eggs of the piranhas are expelled during spawning and fertilized in the surrounding water. The adult males and females join in partial fertilization. The females are most fertile in the months of April and May. Their breeding habitat tends to be in main bodies of water, such as lagoons (Galvis et al. 1989). A rather large macrophyte population must be present for the young when they are born, so they can feed.
how to breed RBPs:
http://opefe.com/PBred_John.html
