I am not really too concerned at the moment because my angels are eating well. If you have seen my recent posts, my ammonia is a little high and I am doing water changes and using ammo-lock to try and nuetralize it. My angels fins look a little strange and i am wondering what is going on. Where there swimming side fins attach to their bodies is like red. I am guessing it is just stress marks from the ammonia. Anyone know what is going on? By the way, the tank is a 125 gallons, ammonia .25 ppm, nitrite 0, nitrate 0, PH 7.6. The tank is stressed from a mini cycle. I am doing like 20-25% water changes everyday now. THe fish are still eating good now, the discus are back to normal as well.