Rich
You have to keep in mind terms ! Every mineral technicaly is a salt . I could be off on this one but it may have something to do with table salt being Sodium Chloride and to make it you add chlorine to sodium . Sodium is not a problem but chlorine is .Also in most of the salt there is added iodine unless you use natural sea salt . Table salt is antibacterial so I can see the reasoning behind using it as a safe method of treating fish .

Epsom salts are Magnesium sulfate so not even close to what we call salt .

Basicly I think the fish can take a lot higher PPM of salt that most plants could and I did not know strawberries would not deal with ANY salt eihter but then I never salt while I water the garden ,so what do I know
Have A Kind Day
Mike