So far we have an awful lot of water boatmen, whose population explosion has already been halted by the fish consuming the next generation, the inevitable pond skaters and at least one water snail that arrived on a plant. Airborne visitors include dragonflies and damselflies, the local crows and assorted small birds. The local cats, of course, come to drink, as does a kounavi (which I could live without as it trashes my plants!).
There are nearby water sources - I've heard the frogs singing from one, but I suspect they may dry out in Summer. In any case I'm fairly sure that newts or frogs won't be able to get into a pond that's this high off the ground and lacking in surrounding ground cover. (I still shudder when I recall the year I inadvertently made a death-run for migrating newts. I spent an awful lot of time in the garden watching for them, ready to transport them rapidly across the dead zone.)
The "water feature"? It's a ceramic jug that I had - we drilled a hole in the bottom to take the hose - plus chunks of stone left over from hard landscaping the rest of the garden. The pond has also acquired a guardian angel. I've been looking for a place to put that terracotta cherub for years and if anyone thinks it's naff, tough!