Fishybiz,
Thank you for your post. We have a professional photographer who is employed by the Aquaculture Coral & Marine Life Facility to take photographs of the aquatic life we offer in our Diver’s Den. For fish photographs, we currently use a Nikon D80 with a Nikon 60mm macro lens. The rock in the background is fiberglass rock that looks very realistic, and is comparable to natural Tonga branch, slab, and Lalo rock that is completely covered in several different colors of coralline algae.
Sincerely,
Mike S.
LiveAquaria
Drs. Foster and Smith