Red-Bellied Piranha search route
Enter the Upper Lake
Stay in the shallow biome rather than descending toward the deeper lake chambers.
Sweep left to right
Check the horizontal water lanes and plant-covered edges between approximately 15 and 29 m.
Check the far-right pocket
Player routes repeatedly place the piranha group toward the right side of the shallow map.
Reload after a complete sweep
If the group is absent, leave and re-enter rather than searching lower biomes.