Marketing is an important activity in the marine fisheries sector of the country. Fish being a highly perishable commodity needs immediate disposal after harvest. Around 50 percent of the fish caught are marketed in and around the landing centres and the rest goes for interstate trade or export. Analysis of price behaviour at landing centres and retail markets helps to assess the efficiency of the marketing system. The paper analyses the efficiency of marine fish marketing system in Nellore through different indicators like marketing margins, percentage share of fishermen in consumers’ rupee, monthly price fluctuations and marketing efficiency index. The results indicated that fishermens’ share in consumers’ rupee varied from 35 per cent for silver bellies to 80 per cent for barracudas. The highest marketing efficiency index was shown by barracudas and pigface breams.