Just got these, too good to pass up as they are beautiful fish, but now they seem to have developed some type of fin rot or issue just on their side fins and back fin. Didn't notice it yesterday, so I think it's something new. They are in a fairly new 400 gallon tank that is not fully cycled but all tests for ammonia, nitrites, nitrates are fine. They are in there with a half dozen goldfish, 3 small bala sharks, and 9 tinfoil barbs, which all look fine. Is it ick? I thought ick are small white spots that attach to the body as well? Just want to get these guys healthy as quickly as possible. Any help is appreciated. Here is the best pic I could get:







