Rubio's, also known as Rubio's Coastal Grill, is a restaurant chain of fast casual "New Mex" or "Fresh Mex" restaurants in the United States. They specialize in Mexican food and put the focus on the fish tacos that they make. As of the year 2016, Rubio's has more than 200 locations in the United States, including in states such as Arizona, California, Colorado, Florida, Nevada and Utah. It has its headquarters in Carlsbad, California. Ralph Rubio and some friends from San Diego State University were on spring break and ate fish tacos for the first time at a local stand. They were so impressed they decided to open their own restaurant to sell them.