Mod
Fish No Stuck
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A small mod that fixes fish stop moving entirely (MC-182763)
Does not follow a specific thematic focus apart from vanilla Minecraft.
Used for mods with little to no gameplay elements.
Contains enhancements to ocean biomes or features content that improves on underwater related gameplay.
Includes quality of life improvements and small tweaks to enhance and customize gameplay.
Forge is a popular mod loader for versions 1.1+ of Minecraft.
Neoforge is a fork of the Minecraft Forge available for versions 1.20.1+ of Minecraft. Many Forge mods are compatible with Neoforge and vice versa.
Fabric is a mod loader for versions 1.14+ of Minecraft, particularly popular for client side and optimization mods.
Quilt is a fork of the Fabric mod loader. Many Fabric mods are compatible with Quilt and vice versa.
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Description
FishNoStuck
A small mod that fixes fish stop moving entirely MC-182763
Support with Minecraft 1.17.x-1.20.x for Fabric (Quilt maybe?)/Forge
How it works
The fish has an AI Goal that scans for the nearest fish, which will randomly select a leader and followers. Then it will let the follower fish follow the leader.
This mod applies bug fix to FollowFlockLeaderGoal by checking the nearest fish if it is a leader or not.
If not, it will add into the follower list.
If leader gets added into the follower list. A Fish Leader will stop and not go to anywhere along with their followers (Forever!). Unless you hit them or switch gamemode to survival and swim near them.
For Minecraft Bug Report, see: https://bugs.mojang.com/browse/MC-182763
Another fix in this mod is:
- Check entity predicate by using
EntitySelector.NO_CREATIVE_OR_SPECTATORinstead ofEntitySelector.NO_SPECTATORSin avoid entity goal. - Set
checkNoActionTimetofalseinFishSwimGoalto fix fish getting stuck at the current position - Decreased
schoolSizefrom leader fish if the follower fish is getting killed.
Performance Impact
This mod doesn't improve any game performance, or it has very minor impact, especially for fish. See FishNoStuck#1
Installation
- Install Fabric Loader/MinecraftForge
- Copy mod into
modsfolder
Backstory
I was working on Fish of Thieves by looking at FollowFlockLeaderGoal and figure it out how it works, then convert it to use Brain system.
By display debug data above an entity.

Then I realize something wrong. A fish with schoolSize=8 has property isFollower=true and has a leader. Which it should not be possible.
So that's the beginning of this mod.

FishNoStuck
A small mod that fixes fish stop moving entirely MC-182763
Support with Minecraft 1.17.x-1.20.x for Fabric (Quilt maybe?)/Forge
How it works
The fish has an AI Goal that scans for the nearest fish, which will randomly select a leader and followers. Then it will let the follower fish follow the leader.
This mod applies bug fix to FollowFlockLeaderGoal by checking the nearest fish if it is a leader or not.
If not, it will add into the follower list.
If leader gets added into the follower list. A Fish Leader will stop and not go to anywhere along with their followers (Forever!). Unless you hit them or switch gamemode to survival and swim near them.
For Minecraft Bug Report, see: https://bugs.mojang.com/browse/MC-182763
Another fix in this mod is:
- Check entity predicate by using
EntitySelector.NO_CREATIVE_OR_SPECTATORinstead ofEntitySelector.NO_SPECTATORSin avoid entity goal. - Set
checkNoActionTimetofalseinFishSwimGoalto fix fish getting stuck at the current position - Decreased
schoolSizefrom leader fish if the follower fish is getting killed.
Performance Impact
This mod doesn't improve any game performance, or it has very minor impact, especially for fish. See FishNoStuck#1
Installation
- Install Fabric Loader/MinecraftForge
- Copy mod into
modsfolder
Backstory
I was working on Fish of Thieves by looking at FollowFlockLeaderGoal and figure it out how it works, then convert it to use Brain system.
By display debug data above an entity.

Then I realize something wrong. A fish with schoolSize=8 has property isFollower=true and has a leader. Which it should not be possible.
So that's the beginning of this mod.

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