As blue catfish overwhelm the Chesapeake Bay, barriers remain to weeding them out

Jose Argueta ran his knife along the spine of a Northern snakehead, pulling the meat from the body of one of the Chesapeake Bay’s most threatening invasive fish. An inspector stood over his shoulder in a white lab coat, embroidered with the letters “USDA.” But she paid little mind to the snakehead on the table, inside the kitchen-sized slicing room at BSA Seafood in Queen Anne’s County’s Grasonville.