Hello, We have a 10 gallon tank 3 electric yellow cichlids and 2 blue cichlids. About 3 days ago we noticed one of the yellow chichlids turning grayish-brownish-black and getting something like zebra stripes, and a black ring around his eyes. We looked it up online and it said that he was just growing and showing dark colors because he was a male. But then he started swimming erratically too. We looked that up online and then saw that he might have swim bladder. So we quarantined him and fed him peas and nothing else, according to what we read online for how to treat swimbladder disease. He had what seemed to be an equilibrium problem which would equate with the symptoms of swimbladder. So this has been going on for about 4 days now and he is no better. He never ate the peas and his color stayed the same. This is a photo that we took next to one of our other cichlids, which you can see looks normal. This was to show the difference in the two fish. There is obviously something wrong with him. Finally we have taken the water to get tested at the local pet store and they say the water is normal. Can anyone give us any answers? Help us out with what he has and what to do? Thanks!