More than 1 million of the species, known as red drum, were caught in Louisiana waters last year. Only spotted seatrout, also called speckled trout, were more prevalent. The BP oil disaster severely impacted the recreational fishery in 2010. Last year alone there were 1,083 spills of various sizes reported from offshore drilling platforms, ships and other vessels in Louisiana waters, according to National Response Center data. Redfish adapt well to changing water quality and live in coastal estuaries, far from BP's Deepwater Horizon oil platform, so scientists thought they fared with minimal damage.