My white betta, Herme, I've had for about a year. Keep him in a 5 gallon tank, with heater, no filter, do weekly water changes adding salt, and vacuum the poop from the gravel. I've battled small bouts of fin rot here and there but he has been healthy otherwise. I noticed a few months back his color started to change from white to an eggyolk color as well as a few red dots appearing on his fins. He was acting normal, being social, eating quickly, etc.. so I decided to keep an eye on it and see. Recently, the red dots have spread from a few on his larger fins, to a lot on all his fins. He is still eating fine and acting normal, but I just want to make sure it isn't the start of a bigger problem. His body and gills are not effected, just lots of red dots on his fins. If anyone has any ideas, I'd like to head this off before it gets worse. I love my fish and don't want him to be sick!
I will try to post a pick that shows more clearly what it looks like.