Hi Christo! Your pond is beautiful. You might check your local laws to see what is legal to keep in a pond. Do you have water lettuce (Pistia stratiotes) available? Water lettuce is an excellent floating plant. So is water hyacinth (Eichhornia crassipes). Both are good choices.
The last time or so that you posted, you had some fish that looked pretty bad. There we’re no follow-up posts, so just wondering if you ever found out the problem and/or got that under control.
Plants are going to depend on what is available and legal where you live. How many ponds do you have and are they natural ponds or manmade ponds?
Don't forget the little floaters: Duckweed (Lemna, Spirodela, Wolffia, and relatives), Duck-fern (Azolla spp.), Eggbeater Fern (Salvinia spp). etc. If you want to know why it is called 'Eggbeater Fern', take a look at the leaf trichomes with a hand lens.
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