Welcome to the forum jules!
We swim in our pond a lot in the summer and share it with the fish and various wild life. We have never experienced any problems of any kind.
We have a few big Northern Pike in our pond (like 38 inches big). Even they don't ever bother us. They live on the Corona Reef in the summer where the water is colder than where we swim.
If you have structure in your pond make sure that swimmers know where it is and stay out of those areas. You may want to consider marking a designated swimming area, with a other areas off limits to swimming.
There are many girls on the forum. It seems they only speak when they have something important to say. Some of the guys are another story being word prolific but content challenged. You know who you are!
