hey everyone...
i have a 5-6" yellow tang that has been in my tank for several months now and he's doing great (knock on wood). anyway, from time to time, he comes out to the sandy area right in front of his "house", extends his dorsal and anal fins, and proceeds to watch the sand "blow" in his tail wash. i was wondering if anyone knows what this kind of behavior means? is it defensive or aggressive posturing, you know, like "i'm bigger than you so you'd better watch out," or is it something else. i kind of doubt that it's aggressive behavior because he never attacks any of his tankmate before or after the display, and usually i have to peek around a corner just to catch a glimpse of him showing how big and bad he is
just wondering if anyone else has any idea....
