Taking a picture of a fish in running water is very difficult.
Not only is the fish well camouflaged, the reflections off the water make it difficult to see.
Anyway, enough excuses, here is a pic of a fish in the river.

Also on the river were a family of swans, the cygnets are growing fast, here they come down the river, 

and here are some of them between the rushes.

Here is a picture down the footpath covered by trees and bushes at this time of year.