Maybe some types of oaks are ok but neither live oak or blackjack are acceptable. When my 2 acre pond was dug, a lot of trees, mostly oak, and some cedars were cleared. I had them pushed into the bowl for structure. We got a dang good rain and I stocked bluegills, about 50 catfish, fathead minnows and crawfish. I started feeding and was happy. Then the water turned black and fish quit feeding. The crawdads crawled out on the banks and died. All fish died. I went to the bait store and bought a dozen minnows, put them in a minnow bucket full of the pond water. They died.

I pumped the pond dry and let our abundant Texas summer sunshine dry everything out. Next, I used my tractor with blade and front end loader to scrape the contaminated dirt.

I found that oaks have tanins which are like fish poison.

All oaks might not be the same but I will stick with cedars for fish cover/structure.

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 Grandpa