On May 4, an article describing the use of the NEPTUN system to reduce the carp population in Minnesota’s lakes was published. We invite you to read.

There are situations in the world where the appearance of fish species that have not previously occurred in a given area causes an imbalance between these species and species of native fish. In extreme cases, this can cause a reduction in the population of locally occurring fish and the abolition of the fishing economy based on these species.

This is the case in the Great Lakes area of the USA and Canada. The emergence of alien species, such as sea lamprey or Asian carp, has resulted in a reduction in salmon and trout populations and very large losses in the fishing economy. To make the protection of native fish more effective, chemicals are now being used to reduce invasive fish populations. Various devices are also being tested, which are designed to block access to spawning sites for these species.

The article describes our NEPTUN system, which, by creating an appropriate electric field between the row of positive and negative electrodes, installed across the river, blocks the movement of fish to spawning sites and allows the fish to be directed to the trap. By installing the system at the right angle and placing a trap at one end, NEPTUN can very effectively direct the fish to this trap. Such protection against invasive species provides an opportunity to limit the use of chemical agents the effects of which on other organisms are not yet fully known.