mr_convitbau

When I bought my red parrot cichlids, they were all red or orange. Right now after one month being kept in my 120 gallon tank, some still maintain their pure red or orange throughout the whole body. Meanwhile, some of them have some kind of black patches or dots appearing on their skin. Is this normal or the fish are getting some type of diseases? There is nothing abnormal about their activity such as eating or swimming.