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Boids

Mod

Boids simulation for flocking fish 🐟

Type

Mod

Modrinth Downloads

3,156,263

Modrinth ID

2OckSy74

Last Updated

Jul 27, 2026

Description

Boids

This mod replaces the vanilla fish behavior of flocking fish with a boids simulation.

A flock of fish in front of a white concrete wall

What's a Boids Simulation?

A "boids simulation" refers to a computer model that simulates the flocking or herding behavior observed in nature, like the coordinated movement of birds or fish. In the context of this mod, it means fish will exhibit more realistic and dynamic group movements, making your aquatic environments come to life.

In particular, each fish will follow these three rules:

  • Separation: steer to avoid crowding local flockmates
  • Alignment: steer towards the average heading of local flockmates
  • Cohesion: steer to move towards the average position (center of mass) of local flockmates

Additional Resources

You can learn more about boids simulations here:

Compatibility

Mod Loaders

Fabric

Game Versions

1.20 1.20.1 1.20.2 1.20.3 1.20.4 1.20.5 1.20.6-rc1 1.20.6 1.21 1.21.1 +11 more

Screenshots

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Included in Modpacks

Trailer Vibes Trailer Vibes Vanilla Enhanced Vanilla Enhanced Aged Aged Vanilla Horizons Vanilla Horizons Wen's Create Experience [Server-side] Wen's Create Experience [Server-side] Wen's Create Experience Wen's Create Experience Flynn's Modpack Flynn's Modpack My Biome Is So Beautiful My Biome Is So Beautiful JPO SMP JPO SMP Cataclysmic Cataclysmic Realistic Minecraft - Frealism Realistic Minecraft - Frealism Vanilla QOL Improved Vanilla QOL Improved Vanilla Plus - Slime Edition Vanilla Plus - Slime Edition EwMedieval Modpack EwMedieval Modpack Redstone Witch [Lite] Redstone Witch [Lite] VisualCraft by Moizoref VisualCraft by Moizoref Proxy Adventures Proxy Adventures Better Adventures++ Better Adventures++ Vanilla+ Game Vanilla+ Game oOZelephOo's Modpack oOZelephOo's Modpack Lively Craft Lively Craft CobbleVentures CobbleVentures Shenanigans Shenanigans The 100 Year Video Game RLFabric RLFabric VBots x Down to Earth: Summer 2026 VBots x Down to Earth: Summer 2026 Elysium Days Elysium Days

External Resources

Modrinth Source Code Issues