Baby Nautilus Persistence Fix

Baby Nautili bred from tamed parents don't have their persistence set. This datapack aims to fix that.

187 Downloads

datapackfabricforgeneoforgequiltgame-mechanicsmobsutility

Rent Server with this Mod

About this Mod

This datapack fixes issue MC-305040, where baby nautili are born without persistence, thus making them able to despawn.

It works through an invisible achievement, which triggers when you successfully breed nautili.

Available Versions

1.0.2release

MC 1.21.11fabric, forge, neoforge, quilt

March 16, 2026

1.0.2release

MC 1.21.11datapack

March 16, 2026

1.0.0release

MC 1.21.11datapack

March 14, 2026

How to Install Baby Nautilus Persistence Fix on Your Server

Order Server

Order a Minecraft Java server with at least 3 GB RAM (4 GB recommended).

Set datapack Loader

In the panel under "Egg", select the datapack loader and matching Minecraft version (1.21.11).

Install Mod

Open the mod browser in the dashboard and search for "Baby Nautilus Persistence Fix". Click "Install" – done! Alternatively, upload the .jar via SFTP to the /mods folder.

Compatibility

Mod Loaders

datapackfabricforgeneoforgequilt

Minecraft Versions

1.21.11

Server-side

✓ Required

Recommended RAM

4 GB(min. 3 GB)

Frequently Asked Questions

Baby Nautilus Persistence Fix server crashes on startup – what to do?

Most common cause: wrong datapack version or insufficient RAM. Check the server log (latest.log) for "OutOfMemoryError" or "Mixin" errors. With Mado Hosting: ensure at least 3 GB RAM is allocated and the loader matches the mod version (1.21.11). You can switch loaders with one click in the panel.

Is Baby Nautilus Persistence Fix compatible with datapack and fabric and forge and neoforge and quilt?

Baby Nautilus Persistence Fix officially supports datapack, fabric, forge, neoforge, quilt for Minecraft 1.21.11. Note: Forge and Fabric mods are NOT cross-compatible – pick one loader and stick with it. The Mado dashboard automatically detects incompatible loader combinations.

Server lagging with Baby Nautilus Persistence Fix – how to optimize performance?

Recommended RAM: 4 GB (per 8 players). Use /spark profiler to check if Baby Nautilus Persistence Fix consumes the most tick time. Common fixes: reduce server view-distance to 8-10, install "performant" or "starlight" as supplementary mods on Forge. With Mado Hosting, your server runs on NVMe SSDs with dedicated CPU cores for minimal latency.