Yeah, he will. Even though he doesn't have a lot of color, I think he is rather healthy. When I went to the pet store to get the betta water conditioner, I looked at the bettas there. I originally didn't even really glance at them because I saw that they wanted $5.99 for their bettas. But I was looking them over, and it was so sad. All of the bettas were in little glass bowls, and they all had really noticable fin rot and fungus! I couldn't believe that the pet store would let their fish get that bad. I was glad I went to Walmart instead. But I feel so sorry that those fish are suffering.
Yes, you gotta be careful where you buy your pets.