Outside of some sedge or rush grass poking here and there on the edges of the banks, I have had no pond vegetation whatsoever in the last 3 years or so... Well, before crayfish and soilfloc I had a nasty overtaking of eurasian milfoil probably came in with geese poop or maybe with a batch of water that had some live critters that was shipped to me. Sonar dosing once in fall and once in the next spring eradicated that.

Then soilfloc really made the bottom rock hard, impervious almost, can't hardly drive a stick or stake in anymore. That is a fairly effective barrier to volunteer seeds or pond plants.
Crayfish eating the plants?, maybe, never see them, can't catch them in a trap, so they actually may not be there in any numbers.

Goldfish, yep a few still left, down to about 30 or so from 'hundreds'

These are growing in the edge of the grass and in the shallow on only one end of the pond but seem to be spreading a little. They are individual green stems, turn white at the ground level, rooted in clusters. I browsed around but couldn't find a match. I tried TAMU tool, didn't help. I thought maybe pennywort family but not quite right. Maybe it isn't a pond plant but something from the lawn that doesn't mind growing partly underwater?

Anyone give me a family name and then I can google some more?

Thanks in advance

Try looking up Ground Ivy.......... or Creeping Charlie

My best guess is Creeping Buttercup. If that's not it, look into the Columbine family. My money is on the Buttercup, but beware that some can be poisonous even to the touch.

Thanks for the help!

I can't find a picture of ground ivy or creeping charlie online that has these leaf margins. It is almost like mini maple leafs.
I looked at buttercup and they are supposed to have thicker taller stems with yellow flowers? I'll keep looking.

I also vote crowfoot buttercup

I think this is in the ranunculus family for sure. Found a great web page. I think my leaf pattern is not exactly like the ones here but close. I think I'll have to wait and see what the flowers look like to nail down the exact ID. It doesn't sound too horrible to manage and I only have about a dozen plants in one area.

Buttercup and related family

And I'll say it probably fits this page the best. It fits description of being a smaller member of the family, does well in cold water and pushes further north into MI. It survived the ice just fine and was the first one growing at ice out. When we have a yellow bud and blossom I'll know for sure. The users who commented on it said it spread pretty readily. If I see that I may have to mechanically harvest although I read that some of these disperse seeds and it can be a challenge to keep ahead of the spread at some point.

Small Yellow Water Crowfoot

more pictures here:

Saskatchewan small yellow water crowfoot