I just added a foxface to my marine tank today and I noticed that now at night he isn't moving out of one spot and was getting sucked to a powerhead intake, I thought "**** why so soon!?" and I got the net out an he swam away energetically; Now he is perching on the rock background of my tank and his colour is significantly different. I just did some tests and there is 0 ammonia, 2.5 or 12.5 nitrate not specified properly in the test kit, and 0.1 nitrite (This is where I'm worried. Are those parameters adequate for my one spot foxface? If it helps my trio of damsels are perfectly fine and energetic. Thankyou and please answer ASAP and if there is something wrong... How can I fix it? Thanks again!!!