Abstract: Dietary items and feeding habits of big eye Brachydeuterus auritus off the Lagos coast, Nigeria were investigated. Analysis of stomach content was done by numerical, occurrence and volumetric methods. The dietary items of B. auritus were crustaceans, fishes, annelids, nematodes, blue-green algae and diatoms. Crustaceans and fishes formed the major dietary item of B. auritus and accounted for 29.5 and 6.1% by number, 52.0 and 23.4% by occurrence and 62.4 and 15.0% by volume. B. auritus is a non-piscivorous predatory fish, other macroscopic animals formed part of the major diet. Crustaceans was the most prominent dietary item followed by algae and then fish in the dry season (January-April) and wet season (May-September). This study will increase the knowledge of fisheries biology of B. auritus by contributing to the trophic structure of B. auritus in the Lagos coast and is relevant for fishery management and aquaculture of B. auritus.