Tracked by Evreward since 2008, FishUSA.com offers coupons and cash back rebates, with savings as high as $50 off. FishUSA.com discount coupons are seasonal, appearing every three to four months, and are often more valuable than similar merchants. Even when FishUSA.com doesn't have a coupon, you can always get up to 5% cash back, and other great rewards, with every purchase.