Mod Boids

Boids, realistic fish flocking for Minecraft

Boids is a Fabric mod for Minecraft Java Edition that replaces vanilla fish movement with a dynamic boids simulation. Fish react to nearby members of their school through three principles: separation keeps them from crowding one another, alignment helps them follow a shared direction, and cohesion draws them toward the group.

The result is more natural underwater activity, with schools that turn and move together instead of drifting randomly. It works especially well on a multiplayer Minecraft server, adding atmosphere to oceans, rivers, aquariums, and custom builds. At BoxToPlay, we recommend it for players who want a subtle enhancement without adding creatures or changing survival progression.