I'm considering trying to build up a paludarium (a ways off in the future, but no point in not starting my research now), and wanted to get some opinions on how the inhabitants should be set up. The way I'll be constructing it is by using a tank and filling the bottom with water, then building a land base above that, so it should be a fairly simple construct. My question though comes up when planning what to keep in it. The way I think a good looking tank should be done is with a singular "focal" species, comprised of one or two animals that will be the largest in the set-up, accompanied by one or two "ambient" species, which would be groups of three or four smaller animals that would fill up the empty room in the tank. I'm thinking that I can fairly easily create a distinction between the focal and ambient species by making one the land-dwelling occupants and the other the water-based inhabitants. But this is where I've reached a roadblock - which should be which? Should I have a focal fish species, with several small frogs/lizards as ambient species, or have a larger lizard accompanied by several small fish, most likely a species of tetra? Let me know what you all think, any and all help is greatly appreciated!
