The pond is a small machine for attention — six fish, one feeder, a handful of rules. Drop food and they swim toward it. Startle them and they scatter. None of it is scripted; every frame is decided in the moment.
A pellet drops where you click. The nearest hungry koi turns and bolts toward it. Up to sixteen pellets at once, each fading after twelve seconds.
A heavier shadow ripples through the water. Every fish rotates away from the threat in one frame and bolts. Speed quadruples for a moment, then settles.
Each koi has its own scale and turning radius. Smaller ones are quicker to dart and slower to forget. Bigger ones drift the long arcs and ignore you when full.