Raw Mackerel are sold by: * Harry's Fishing Shop in Catherby (0 in stock by default) * Fishing Guild Shop (0 in stock by default) * The Fremennik Fishmonger in Rellekka (0 in stock by default) * The Etceteria Fish in Etceteria (0 in stock by default) * The Island Fishmonger in Miscellania (0 in stock by default) * Frankie's Fishing Emporium in Piscarilius (25 in stock if >30% favor)