If you have ick they will have white spots that look like grains of salt on them, sometimes u have to look real hard and u may see a spot or 2, and that would be from very bad water or from those other fish u added that may have had it. Stuff spreads like a mean rash. I'm still not clear on how or if ur tank is cycled.... Id stop adding more fish and keep an eye on ur levels. Even with meds and salt ick will be near impossible to treat with 11 rbp in 80 gals.
Id start with a wc now and add 5-8 tablespoons of salt, keep their temp around 80-84 but if aggression becomes to much of course lower it. Hopefully u won't have an outbreak. Wouldn't advise meds unless it gets bad.
Go S. Vettel #1 rb8