Parrot fish are a man made crossbreed. Not much is known about their breed specific ailments yet. Black Spot Disease, Ready to mate, water quality issue, changing color naturally as it matures, The black on your fish could be any one of these. Most of the time one or another of these will produce the markings and will not have an impact on the fishes behavior. You can attempt to medicate the tank if you want, if it is a disease parasite then Maracide would probably work best. It could also clear up on it's own. I would do a water change and test water quality first.
Yes a parrot fish female could turn into a parrot fish male it changes gender and color :}
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All the dirt and fish poo in it.
abuse, sickness
It can either Mean the lighting is too bright or the water is warm
phone rings but can't get to answer
by waving their tail the fish can turn its head
I'm So Sorry But When A Black Moor Turns White It Means It Will Eventually Die Or It's Aged
When fish turn black, it means that their body has been harmed with too much ammonia. Ammonia to fish is like acid to human skin. The black you might be talking about is called ammonia burn, which makes the fish scales black. My comet goldfish has been through that before, although it lived. Nearly the whole body was black besides the core stomach area. If a fish has too much ammonia in it's water, it might die, because high ammonia levels are not good for fish, as well as it will make the fish black im the same person who asked the question. How does ammonia get into the water. From tap water?
The finns on a fish help the fish to navigate and turn.
You are either born black or not, and you can't simply "turn" black at will.
because if they get old they turn black