Can't say about the oysters but last year the red fishing was darn good.
We went about 6-8 miles south of Gulfport and had a blast all day long.
One thing i noticed is that for a about a month there were no live bait shrimp to be had.
The thing about sewer water being put into the gulf has been going on forever.
They see the storm drains off the beach and they think they are sewer pipes.
The river release had an impact on how salty the sound water is and the fish move farther out,they can live in brackish water but if it gets out of balance they move south.
