well parrot fish are tube fish that shouldn't have been bred, it could be the result of the parents and how the colours came out.
now, it could also be something else. have you cycled the tank, if so for how long, how long have you had the tank. what are the stats of the tank etc etc etc.
look at the fins, are the split?
how are the scales? poking out etc?
how is the poop and eating behaviour of the fish? is it healthy brown, or stingy and white?