Ok, so I have been researching and have not found any salinity tolerance for Blue Fish. All I could find is they have a wide range of salinity tolerance. I figured I would give it a shot. I cought a 12 inch bluefish and have been doing "fresh water" water chsnges since 9 am. , adding pond water for water changes the last few hours.
Any way, it didn't die "yet" I released it in the pond as I was running out of day.
The jury is out.... And here is a video of the release


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