I went down today to find some in our local creek here and low and behold I was able to get about 20 pieces of fresh water prawn fry. I think I got some water fleas too but it was hard to tell.
Getting fresh water prawn fry is expensive even here but the creek was full of them.
I will go to another place to find some slower moving water with more debris laying around.
It was a good day today sunny and the water was cool