As @jasonrusso said those bumps are normal markings. Ich is very difficult to diagnose on fuzzies, because of the fuzzy nature of their coat. Many times lions will just shed and slough off any attempt for ich to stick to them. Feed well and keep good water quality, a healthy lion will defeat any attack of ich without treatment. Other than letting it ride, i've never seen a lion survive long after any attempt to treat with any methods being used today.