Thats what the countless hippos I have seen that have ich look like. That link that regalangel posted is an incredibly bad case of ich. If you have had the fish a while, just keep feeding well and make sure to add garlic, seachem metronitizole and seachem focus to the food. Having said that to rid your tank of ich you have to have all the fish out of it for at least a month but more like 2 months so all the free swimming ones will be dead. In all honesty if you keep your fish well fed and healthy then ich should have minimal affect on them.