To check the status and growth of fish 2 times a month Oblov dragnet control is carried out in several areas of the pond. Caught fish inspected and weighed, the average weight is determined (by dividing the total weight of fish caught in its quantity). It is advisable to examine a single control Oblov least 0.5-1% of the planted fish. We can not allow the death of fish during weighing.
Caught fish inspected to detect signs of disease. If they are found (ulceration of the skin, white patches on the surface of the body, separation of scales, exophthalmia, whitening of gill filaments), it is necessary to address urgently to specialists.
Surveyed the fish released back into the pond, sick — utilized.