I have two Clownfish in a tank by themselves for about nine months. They have paired and both host a flower pot. I have noticed in the last couple of days the male is swimming fast, in one spot. Then he darts around real fast. I noticed there looks like bite marks on the top of his back. The female doesn't want him in the flower pot. Does this sound like a testinal disease or something? I have checked water parameters and they are in check.