In 1987, Lee Brothers of Aurora became the first person in the country to pond-raise hybrid sea bass commercially. The fish, a cross between a striped bass and a white bass, generates around $7 million annually in the state. Hybrids are popular in sushi and sashimi markets in the Northeast. North Carolina now has nineteen hybrid producers, the most in the United States. Beaufort County has five of the nineteen fish farms. As coastal development pushes into areas where the fish are raised, farmers face public pressure about releasing effluent from their ponds into streams and rivers.