Steve, there is an article on Lions in the 'Marine and Reef Fish' Annual issue on sale now. Dwarf fuzzies can be kept in groups, they will form hunting parties at dusk and cruise over the rocks looking for food. The dwarf zebra you can keep male and female or two males if introduced at the same time - if you added a female the males would start fighting. The dwarf zebras have some distinct differences between the sexes but I'd have to find my notes to be sure.

If you ever want to see mine let me know - they are fun to watch eat.