My Texas Cichlids face turned black a few days ago and now only 1 side of his face is black. Just did a total cleaning of the tank the ph is real low I need to bring it back up. Question is: does the texas cichlid do this as it gets older. I have had this one almost 10 months and he was a baby when I got him. He shows no sign of stress swims perfect but he was staying in his cave for the past few days. His face turned black when I shut the tanks lights off and left them of for the past few days. before i did that I did not notice the black face.I noticed him get dark before when the lights were left off but not like now...


