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根据１９９２年－１９９３年渤海增殖生态基础调查大面定点底拖网试捕的渔获物，对渤海２７种鱼类和１０种虾蟹类的３８０１个胃含物样品进行了分析，并与１０年前渤海鱼类的食性进行了比较。结果表明：蓝点马鲛、小黄鱼和白姑鱼等主要捕食鱼类胃含物中鱼的比例较１０年前明显增加，鱼类的食性类型无明显变化。渤海低级肉食性鱼类的营养级由１９８２－１９８３年的平均２．４上升为２．５，中、高级肉食性鱼类的营养级分别由原来的平均３．２和３．８降为２．８和３．３。渤海主要鱼类之间饵料重叠系数大于０．６的占１５％。鱼为渤海多数中、高级肉食性鱼类的主要摄食对象。
Based on the investigation of large bottom trawling catch from 1992 to 1993 in the Bohai Sea ecological base, 3801 samples of stomach contents from 27 species of fish in Bohai Sea and 10 species of shrimp and crab were analyzed and compared with 10 years Pre-Bohai fish feeding habits were compared. The results showed that the proportion of anchovy in the main predatory fish stomach contents such as Stipa bungei, small yellow croaker and white croaker increased significantly compared with that of 10 years ago, and there was no significant change in the diet of fish. The trophic level of the low-level carnivore fish in the Bohai Sea increased from an average of 2.4 in 1982-1983 to 2.5. The trophic levels of middle- and higher-level carnivore fish did not fall from the original mean of 3.2 and 3.8 2.8 and 3.3. The prevalence of bait in the main Bohai Sea fish is greater than 0.6, accounting for 15%. Fish is the main feeding target for most carnivorous fish in the Bohai Sea.