Am I Being Paranoid?

I was just looking at my fish in my 55 and I noticed that there is red at the base of my gold sevs tail fin, red at the base of all 3 of my blusher angels anal fins. None of the fish are acting abnormal. All of them have eaten. Poop is normal too. None of the fish in the tank seem sick at all. Params are 78 F, Am 0, Ni 0, Na 20.

The only fish that I see this on are the light colored ones. So is it normal looking to you? Am I just being paranoid??

Params are up in first post but here they are again. 78 F, Am 0, Ni 0, Na 20.

Thanks star_rider. Now that I think about it, I don't think I have ever had light colored fish before. I just saw the red at the bases of fins and got paranoid. Usually it means something bacterial in the tank. You read about so many problems so I am always checking for spots, streaks, bloatedness...you name it.

Thanks Blueiz