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Nutrition
Adult forms of most species are parasites minogów. Przytwierdzaj± to the bodies of larger fish up to 2 years, during which time they feed on the tissues. When minogi przysysaj± to the victim's body, her skin z±bkami nacinaj± and divert pieces of food. In the lamprey metamorphosis aspiration about one and a half liters of blood and other body fluids victim to later detach itself from the host and start the journey the spawning stock. Get rid of this parasite is almost impossible. Sometimes when the water surface widuje victims minigów like trying to swim on their backs. In this way, try to leave the head on the air lamprey, which also przyduszony can detach from the host body. These parasites can cause serious losses in fish populations of commercial importance.