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根据７个冬季变水层拖网瞄准捕捞越冬鱼是鱼平均小时产量统计和探鱼仪鱼群映象纪录资料，研究了鱼是鱼集群分布模式和集群密度。鱼是鱼集群分为表层型、中层型和近底层型３种分布模式。１４种典型集群映象有捕捞生产价值。３种模式的鱼是鱼集群密度是：中层型高于近底层型，近底层型高于表层型。使用５２０目×６００毫米变水层拖网瞄准捕捞中层型集群鱼是鱼平均小时产量５．０～１４．０吨、近底层型３．６～４．５吨和表层型２．３～３．０吨
Based on the data of 7 winter aquifers trawling aimed at fishing wintering fish, the average hourly output of fish and fish farmer image records of fish finders, the distribution pattern of fish and its population density were studied. Fish is a fish cluster is divided into surface-type, middle-type and near-bottom three kinds of distribution patterns. Fourteen typical cluster maps have fishing production values. The three species of fish are fish with cluster densities: the mid-level is higher than the near-bottom, the near-bottom is higher than the superficial. Using 520 mesh × 600 mm variable layer trawls aiming at fishing medium-sized cluster fish is the average hourly production of fish 5.0 ~ 14.0 tons, near the bottom of 3.6 ~ 4.5 tons and surface type 2.3 ~ 3. 0 tons