You have nice smart fish
I had a really smart goldfish, it would dance to music as I waved my hand back and forth in front of it, following my fingers. And when I held my finger at the glass, it knew that if it swam up and 'kissed' (glup glupped at!) it, then I would feed it. If it wasn't hungry, it wouldn't come over. But it died
My new goldfish are both very stupid, they don't even associate the sound of me shaking the food container with getting fed, Pavlov would be very disappointed! I still talk to them though