Joanne Rathe/Globe Staff
In 2011, the H Mart supermarket in Burlington misrepresented crimson snapper for the more expensive red snapper, and escolar, which can cause gastrointestinal problems, was mislabeled as white tuna. At the time, an executive with H Mart blamed a supplier for the mix-up. In 2012, the supermarket sold cheap freshwater perch as pricier ocean grouper, and Pinjalo snapper was marketed as the more expensive red snapper. A company executive for the Asian grocery chain said he was investigating the mislabeling problems.