Some of that stuff looks like duckweed. If so, it is pretty mean stuff to get rid of and I prefer to nuke it. Draining doesn't do much cause it can do just fine in mud.

Also, while I had the hoe working, I might do something about what looks like a willow in the third picture. Or maybe cut and poison it. Those things are trash trees and suck a lot of water.

It's not about the fish. It's about the pond. Take care of the pond and the fish will be fine. PB subscriber since before it was in color.

Without a sense of urgency, Nothing ever gets done.

Boy, if I say "sic em", you'd better look for something to bite. Sam Shelley Rancher and Farmer Muleshoe Texas 1892-1985 RIP