Ugh. I awoke this morning to find my beautiful black and orange oranda missing lots of scales. On one side of the fish he is missing scales in an area a little smaller than a dime. My first thought was my bristlenose catfish have confirmed the goldfish sucking theory and I was going to ship them back to the pet store. But upon closer look there are scales missing on the other side of the fish (just a few) and on top of the fish (again just a few). I think I figured out what had happened. Last night I put in one of those castles - it has lots of holes not big enough for my goldies to fit in, but just right for the bristlenoses. You see my goldies eat all of the zucchini and algae wafers while the bristlenoses patiently wait their turn (which means they never get any). So I bought this castle hoping to solve the problem. I was only going to have the castle in the tank at night for feeding the bristlenoses. I believe my oranda tried as hard as he could to get into one of those holes so he could get at the food (as though they are not fed enough already). All the goldies were trying to get in last night. I have learned my lesson I won't put the castle in, but is it going to take forever for these scales to come back (my ryukin still doesn't have his back - though he is looking much better) and they were black scales. He is such a pretty fish. Will all these scales come back over time, but pale orange color?