Fish Fix
by Dejeh
Fish Fix is a NeoForge world generation mod that replaces the game's hardcoded sea level with a value the server owner sets.
What it does
Minecraft fixes the sea level inside its code, so aquatic mob spawning and ocean generation assume one height. Fish Fix changes that behavior, letting the sea level be set in its config. Only the server needs it, and clients may leave it out. Files are published for NeoForge on 1.21.1, with 1.0.0 as the latest build from 2025-07-12, under the MIT License as open source.
Key features
Adjustable sea level
The sea level used by the getSeaLevel method can be set by the user instead of the game's fixed value.
Aquatic spawning fix
Mob spawning in water is adjusted so that it follows the configured sea level rather than the hardcoded one.
Config-driven change
The default setting keeps vanilla values, so a practical effect only appears after the config is changed.
Gallery
Compatibility
Latest build for each game version and loader.
Only full game releases are shown. This mod publishes no snapshot builds.
How it compares
Void Spawn Fix is a server-side only NeoForge mod for 1.21 – 1.21.1, released under All rights reserved and not open source. Sea Life is open source under the MIT License and covers both Fabric and NeoForge for 1.21.1 – 26.3, with client and server both needing it.
| Mod | Loaders | Game versions | Environment | Updated |
|---|---|---|---|---|
| Fish Fix | NeoForge | 1.21.1 | Server required, client optional | 2025-07-12 |
| Void Spawn Fix | NeoForge | 1.21 – 1.21.1 | Server-side only | 2026-08-03 |
| Sea Life | Fabric and NeoForge | 1.21.1 – 26.3 | Client and server | 2026-09-26 |
In the catalog
Fish Fix is one of 8,515 World generation mods on ModsFinder, and one of 4,175 World generation mods for NeoForge. 32,366 mods support Minecraft 1.21.1.
Similar mods
What the author says
This is a mod for NeoForge 1.21.1. It addresses this bug in particular: It simply fixes the consequences of the hardcoded "getSeaLevel" method by allowing the user to set their own sea level. This bug was fixed in 1.21.2. This mod is primarily useful for datapack and modpack creators, or anyone who modifies world…
Official listing
- Modrinth page
- modrinth.com/mod/fish-fix
- Owner
- Dejeh
- Published
- 2025-07-12
- Updated on Modrinth
- 2025-07-12
- Facts verified
- 2026-10-15