I have two nano tanks in my house, one of them was ravaged by what I think is velvet which killed a reg clown and a dottyback. The glass cleaner from that tank was moved to my gold nugget maroons' tank for a bit (by one of my siblings) recently I've noticed that my female gnm has this dark blueish splotch on exactly the same place on both sides of her body, is she sick or is it natural, they are the first pair of maroon clowns I've owned so I'm not sure. Also they seem somewhat sluggish when the lights are on but when they are off they're completely fine


