Welcome to AA! Looks like you are off to a good start. You are lucky to not have had problems with your cycling. It is a pretty critical part of keeping fish.
Your pH sounds normal to me. I would recommend just leaving it alone because trying to adjust it can cause problems especially since you would have to adjust it every time you added water to it. I'm not sure what pH danios prefer, but they are obviously doing well now. The only time you need to worry about having perfect pH for the fish is for breeding conditions for very difficult and picky fish to breed. Since danios are good beginner fish to bed with, I think you would have some leeway in the pH. Bottom line is, it is more important to keep the pH stable. You can always add driftwood to the tank and that can help lower the pH naturally, but not very significantly in my experiences. Hope this helps! I look forward to seeing you around the forum!