kapasitetssoner

Kapasitetssoner, also known as capacity sons, are a phenomenon observed in certain species of fish, particularly in the family Cyprinidae, which includes carp and minnows. This behavior involves a male fish, the kapasitetsson, swimming in a circular motion around a female fish, the kapasitetsmor, who remains stationary. The kapasitetsson's circular motion is believed to stimulate the female's reproductive system, increasing her fertility and the likelihood of successful spawning.

The kapasitetsson behavior is thought to be a form of courtship display, although its exact purpose and evolutionary significance are still subjects of ongoing research. The kapasitetsson's circular motion is typically performed at a specific depth and with a particular speed, which may vary depending on the species and environmental conditions.

Kapasitetssoner is a term used in Swedish ichthyology to describe this behavior. It is not unique to Swedish waters, as similar behaviors have been observed in other parts of the world, although the term may not be universally used. The phenomenon is of interest to fisheries and aquaculture, as it can impact spawning success and the overall productivity of fish populations.