On the results of some field materials collected from 2002 till 2008, on the basis of length composition analysis of individuals, weight of females’ gonads and sex ratio an attempt was made to select locations and periods of Antarctic toothfish mass spawning in some areas of the Pacific Ocean and Indian Ocean sectors of the Antarctic. In the Ross Sea area the most probable areas are the Pacific Antarctic Ridge and the Amundsen Ridge in the Amundsen Sea area. In the Cooperation Sea area the most possible mass spawning place is the Banzare Bank. Obviously, the mass spawning is stretched and falls on the winter season, sometimes covering part of autumn or spring season.
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