Thanks. I liked that shot as well. Funny how some of the better shots are the ones you least expect.
One of the ways I draw the male Zonatum into the area I have lit with photos is by using the silk plants in the tank. He is in constant gardener...moving the foliage back and forth . Mostly I just wait for him to finish and come into the lighting's sweet spot with the foiage in the background.
I thought it might make an interesting series of photos showing his obsessive/compulsive when it comes to his tank decor. This predictable behaviour makes it easy to photograph.
He generally starts by diving in and surveying the area:
Tucking in the corners along the side of the tank:
This particular plant always give him the most trouble as it is pushed around by the current. I put my hand in the tank and move it to the other side of the tank and within seconds he is grabbing it and pushing (pulling) it back home.