What actually happens when the fish is stationary in the water?

When a fish is stationary in the water, it typically uses a combination of its fins and body position to maintain its balance and stability. It relies on its swim bladder to control buoyancy, allowing it to stay at a specific depth without expending much energy. The fish may also use its gills to respire while remaining still, and its sensory systems remain alert to detect predators or prey nearby. This behavior often helps the fish conserve energy or wait for suitable feeding opportunities.