( CNN ) -- Several commercial fishing areas that were closed because of the BP oil spill had an `` emergency reopening '' Saturday , Louisiana officials said . The Louisiana Department of Wildlife and Fisheries said it coordinated the move with the U.S. Food and Drug Administration . Commercial fishing reopened for finfish and shrimp in portions of state waters in Lafourche , Terrebonne , Plaquemines and Jefferson parishes , the department said in a statement . Adjustments also were made to the areas closed to recreational fishing west of Southwest Pass of the Mississippi River . Those areas closed to commercial fishing now match the areas closed to recreational fishing , the agency said . Comprehensive FDA tests of seafood samples from previously closed areas showed fish are safe for consumption , according to the statement . Saturday 's openings do not include the commercial harvest of crabs and oysters . The FDA testing method for crabs takes significantly longer to process , officials said . Some of the environmental damage to the Gulf of Mexico since the April 20 rig explosion and subsequent spill appears to have abated in recent weeks . The National Oceanic and Atmospheric Administration reopened 5,144 square miles of Gulf waters on Tuesday for commercial and recreational fishers to catch finfish , saying that since July 3 its data have shown no oil in the area . Coast Guard observers flying over the area in the past 30 days also have not observed any oil . In addition , NOAA said fish caught in the area and tested by NOAA experts have shown no signs of contamination .
Louisiana has commercial fishing in several areas closed by the order ##A . Preliminary tests find fish safe for consumption , state agency said . Order does not ban harvest of crab and oysters .