This fishy deal is an easy catch for Arby’s customers. Known for its roast beef sandwiches, Arby’s has dived into new territory for a few years now with its very popular Classic Fish Sandwich (reg. $2.99.) The sandwich is even ranked #1 among 5 fast food chains, according to grubgrade.com. For just $5, get two fish sandwiches or a fish sandwich combo (sandwich, small fries and small drink.) The deal is for a limited time at participating locations.