I have a one foot deep pond, two feet wide and 1 metre long pond with elodea crispa and water hyacinth. What fish/inverts/other plants can i add to it?
It also has 3 pond snails.

There are so many options! I would stick to plants and animals that stay pretty small.

I was thinking of rosy reds and stickle backs but as the pond is so shallow I decided to stock it with ghost shrimp, snails (diffrent species) and swan mussels.