Just inherited 3 discus, very large. I have an established tank and I put all 3 in there with a clown loach which is a good worker. They are shy but do come out when nobody is around but eating is difficult to see cause I am not around to watch. My question is one is not colorfull dark I should say the other one is brighter and other one is just another color but looks good. They all swim together my concern is the the darker one. I did put some general cure api in there just a precaution. I have a tank with other fish in it so I do have experience with other fish. Discus are new to me just trying to get some info. Thanks again if you can give some feedback

