First record and distribution patterns of an amphipod, Aroui onagawae, which causes feeding damage to gillnet-caught fish in Sendai Bay

Puntos clave

• The aim is to identify the amphipod species causing damage to fish caught in gillnets and to study its distribution in Sendai Bay.
• Used bait traps to collect samples from depths of 18–50 m in Sendai Bay.
• Identified the damaging amphipod species as Aroui onagawae, proposed common name 'Swimmy Amphipod'.
• Analyzed the collection data focusing on the species' distribution characteristics.
• Aroui onagawae constituted 85% of the benthic samples collected using bait traps.
• The species was predominantly found at depths greater than 30 m, especially at night.