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据最新统计,深海性鱼类种类多达1,500—2,000种,1958年、1961年、1962年、1965年、1970年苏联分别对西格陵兰海水深800米、大纽芬兰岛南水深700米、白令海水深800米、大西洋中部至东部和东南大西洋水深1,100～1,200米水域用拖网进行调查。之后,1971—1973年对大西洋东北部、东中部、东南部水深2,000—2,500米,1974年对太平洋水深2,000米水域也用拖网进行调查结果表明,深海性鱼类以7—8个科为深海渔业捕获对象。而水深500～600米的鱼类高达35个科以上,其中有16—20个科为主要捕获对象。
According to the latest statistics, there are as many as 1,500-2,000 species of deep-sea fish. In 1958, 1961, 1962, 1965, and 1970, the Soviet Union respectively drilled 800 meters of water to the West Greenland Sea and 700 meters to the south of Greater Newfoundland. Investigations were carried out using a trawl to survey seawater depths of 800 m, mid-Atlantic to eastern and southeastern Atlantic waters of 1,100 to 1,200 m. After 1971-1973, 2,000-2,500 meters deep in the northeast, east-central and southeastern parts of the Atlantic were surveyed by trawling in 1974 for 2,000-meter water depth in the Pacific Ocean. The results showed that deep-sea fish were found in deep sea Fisheries catch objects. While the fish at depths of 500-600 meters are as high as 35 or more, of which 16-20 are the main catchments.