No idea what it is and plants are OK as long as they don't take over. Use caution with herbicides. They can kill algae that you do need. If you see a noxious plant/weed that you don't want either pull it or spot spray it.
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
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