... .5mmsq, 15.4mmsq,16.5mmsq, 17.5mmsq etc.Sardine / Pilchard / Jack Mackerel210/24 ~ 210/3601",1-1/8",1-1/2 ... , our Purse seine nets are used to encircle or fence in a school of fish and are pursed at the bottom ... , bonito, flying fish mackerels,capelin, frigate mackerels ,herring,Sardine,Pilchard,Jack mackerel,Tuna etc. purse seine net