Ive had a blonde naso tang in my tank for about six weeks now. A little more than a week ago on sept. 20 I noticed that he turned from his usual light gray and blond to a very dark gray almost black. He does this every time I approach the tank. Is it stress related or is it something else? The tank is a Red Sea reefer 625 and parameters are:
Salinity 1.025
Ammonia 0
Calcium 450
Alk 8.5
PH 8.3
Nitrate~5ppm
Phoshpate~0.06ppm
He only seems to do this when I approach the tank. I can honestly watch him change colors. The tank is in my living room and I can see it from my kitchen and he will be gray and blonde until he sees someone. It is getting better I will admit he eats like a pig, Nori, pellets, flakes, frozen, and I think he's starting to associate people with food. He is still very small only around 2.5 inches. Could the fact that he's still so young be a part of why he's suddenly changing color? He's not getting bullied by any fish so I'm just curious if anyone has any suggestions. Thanks!
Salinity 1.025
Ammonia 0
Calcium 450
Alk 8.5
PH 8.3
Nitrate~5ppm
Phoshpate~0.06ppm
He only seems to do this when I approach the tank. I can honestly watch him change colors. The tank is in my living room and I can see it from my kitchen and he will be gray and blonde until he sees someone. It is getting better I will admit he eats like a pig, Nori, pellets, flakes, frozen, and I think he's starting to associate people with food. He is still very small only around 2.5 inches. Could the fact that he's still so young be a part of why he's suddenly changing color? He's not getting bullied by any fish so I'm just curious if anyone has any suggestions. Thanks!