Jack in the Box's Fish Sandwich consists of sustainably-caught Alaskan pollock that is covered in panko breadcrumbs and then deep fried, served with tartar sauce and lettuce on a toasted bun.
The $4 Fish Sandwich Combo includes the Fish Sandwich, a small order of fries, and a small fountain drink.
Both the sandwich and the combo are typically served through late April.
Photo via Jack in the Box.