Hello I have six rosey tiger barbs (I believes that's what they are). One has really changed colors in the last week or so. It was colored as the others, but recently it has changed to a really dark red and the black areas are really dark now? What is happening to the little guy. All water parameters are perfect and the water temp is at 80. There are several other fish in the tank also, please check out my signature. Just curious about the color change, is it something to be concerned with? It is the only one who has changed color.
Thanks !
Thanks !