Hello, I have had a dwarf gourami for about a couple weeks now. When I got him I noticed a single white spot. I didn’t think it was ich because it was a single spot. Now, 2 weeks later it looks as if the spot is accompanied by 2 or 3 more small ones. Does ich spread throughout the body this way and this slow? The photos are taken 2 weeks apart. All my other fish seem to be fine! Thanks for any input!