Abstract Crabs from the family of Portunidae are distributed widely in Indonesian waters, including the blue swimming crabs which has been exploited as a target species to meet the export demand and economic needs 3 of the capture fisheries sector. Crab catches from Portunidae family makes a major contribution to marine fisheries production in Batubara Regency, North Sumatra, Indonesia. The purpose of this study was to analyze the species diversity and catch per unit effort (CPUE) of crabs of Portunidae family in January–March 2023 in Tanjung Tiram Waters, Batu Bara Regency, North Sumatra, Indonesia. The fishing area was located right across the Malacca Strait, which is congested with international shipping traffic. Data were obtained through observations and community interview. Catch per unit effort (CPUE) of crabs was analyzed. The results showed about five species of crab from the Portunidae family were caught, including Portunus pelagicus, Scylla serrata, Charybdis feriata, Charybdis affinis, and Charybdis natator. The avearga CPUE value of target species Portunus pelagicus was 8,8 kg/trip.
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