Based upon survy data collected from north Yellow Sea during autumn in 2007, feeding ecology of L. tanakae could be classified as a benthic carnivorous predator. was the most important prey species. At one station in the north part of this study area, large amounts of fish eggs of . The ordination technique of the canonical correspondence analysis (CCA) was applied to study the association of available explanatory variables to the diet composition of . Depth, longitude, latitude and size were four important variables and significantly affected the variance in diet composition of < 0.05), whereas sex and gonad maturity stage had no significant impacts on the diet (> 0.05). A strong positive relationship was found between the lengths of <0.05), whereas no significant correlation was found between the lengths of > 0.05). The length ratios between the two preys and < 0.01; . Regression analysis showed there were exponential relationships between stomach weight with contents, empty stomach weight and the length of