> I remember seeing fish I was used to catching (perch)

I think VooDooJuJu's sibling comment is correct, and jumping off from that, I wonder: do you, or did you, have dreams about that event?

This scene sounds something right out of cartoons I used to watch as a kid. I wonder if you added this scene in as part of a dream, and somehow your brain grabbed that experience and incorporated that into the memory node family.