Fish

Fish is a small passive water vermin with many color variants and full schooling behavior. A pool of them behaves like one shifting ribbon.

Underwater they use boid movement, following nearby fish while correcting away from walls and the surface. Out of water they lose that control, flatten out, and panic. They do not attack.

They show up across ponds, Flood, watery dungeons, and other wet spaces. A kill gives fish corpse, can spill water, and has small chances for flippers or snorkel.