I have had my Betta for a couple years. A month ago, I noticed a small white spot on his back. I researched a lot online to find out what it could be. I do not think it is Ick, as it is one spot, still just the one. I medicated him with BettaFix, with no results. Then tried API Fungus Cure, nothing. The spot has now gotten larger. I just tried API T.C. Tetracycline, and it has not helped. I do have Kordon Ich Attack to try next (treats 4 possible illnesses in one I am told), but am worried about over-medicating my fish! He is acting normal, eating well, lively, keeps making a bubble nest, etc. I am worried about the spot continuing to grow. I have been changing the water every week, and more often when medication instructs. Any advise on what this could be or other medications to try would be very much appreciated!! I am worried about him. Thanks so much.
This is the best photo I could get of him tonight, but let me know if you would like to see another!: