Well, I was cleaning out a fry tank, and couldnt see one of the newborns because of it's coloring (he blended right in!) and I hit him in the head on accident. Well, he's still breathing, but he won't move. If you poke him he just floats around like he's dead. His left fin is moving, but his right one isn't. I don't know if I gave him a concussion or what, but what should I do??