In the safty of the pictus
they are not ich carriers, they just have weak immunes to them and most likly if it got it and you didint see it when you first saw it, it was possably already in your water and the other fish where to strong to get attacked to roughly to it, my betta suffered from three boughts of ick and one of velvet, one stomach parasite, tail rot nine different times, amonia inbalance four times and the last one killed him called dropsy. Then I had my water for awhile in the tank with no fish and little white things slowly apeared and looked like ick attached to the surface of the gravil, showing that it is not the fish who brought it, but plain tap water
not a nice thing to think about the next time you go to sip water, but its true.
Poor pictus... I saw one of those before and they are remarkable medium size fish , rest in peace ...
One fish that is for sure a carrier of desease O_O IS MOLLIES!!! ^^; so if you plan to get another fishie, try your best not to get it. For they will just bring ick right back along with a million other parasites and organizums on their scales. Even pro owners let people know about that before they buy mollies cause they carry acids in their body that break out every time the water changes, giving out deseases from ick to Goldcloth depending on the fish,most of all they kill eachother off from Velvet Oo;!!!