TODAY I FOUND A 5 POUND BASS FLOATING NEAR THE SURFACE OF MY 3/4 ACRE POND.THE POND IS 14' AT IT'S DEEPEST,THE FISH WAS DYING WHEN I REMOVED IT FROM THE WATER,UPON CHECKING THE FISH I FOUND A GROWTH ON BOTH GILLS,IT WAS GREENISH BROWN,COVERING APPROX.1/3 OF IT'S GILLS.I PUT THE FISH IN A PLASTIC BAG AND PLACED IT IN MY FREEZER.DOES ANYONE KNOW WHAT THIS COULD BE?