BetterNether Ambient Mobs

Adds just the two ambient mobs from the BetterNether mod.

13.8K Downloads

fabricmobs

Rent Server with this Mod

Screenshots

About this Mod

Mod Logo

WARNING: If you are looking for the complete original BetterNether mod this is NOT it! Although it doesn't cause a conflict, you shouldn't install both mods at the same time.

BetterNether is a great mod, but one of its best features is its two ambient mobs: the firefly and the hydrogen jellyfish.

Those two mobs and their spawn eggs are the only thing the mod features, so you can continue playing in your world without the rest of the BetterNether stuff if you don't want it there.

Both mobs spawn in any biome in the Nether, including biomes from other mods.

Mob icons are included if you use Xaero's Minimap.

Works in Forge with Sinytra Connector!

All rights to the original creators of BetterNether: quiqueck and paulevs.
All rights to the firefly icon from the RP: Hellim's Xaero's Maps Mob Icons

⚠️ Warning: Official Download Sources

Beware! My content is only distributed for download from Modrinth and CurseForge.

Any other site doing so is NOT me!

Available Versions

v1.1.0release

MC 1.20, 1.20.1fabric

January 7, 2026

v1.0.0release

MC 1.20, 1.20.1fabric

March 5, 2025

How to Install BetterNether Ambient Mobs on Your Server

Order Server

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

Set fabric Loader

In the panel under "Egg", select the fabric loader and matching Minecraft version (1.20.1).

Install Mod

Open the mod browser in the dashboard and search for "BetterNether Ambient Mobs". Click "Install" – done! Alternatively, upload the .jar via SFTP to the /mods folder.

Compatibility

Mod Loaders

fabric

Minecraft Versions

1.20.1, 1.20

Server-side

✓ Required

Recommended RAM

4 GB(min. 3 GB)

Frequently Asked Questions

BetterNether Ambient Mobs server crashes on startup – what to do?

Most common cause: wrong fabric 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 (1.20.1). You can switch loaders with one click in the panel.

Is BetterNether Ambient Mobs compatible with fabric?

BetterNether Ambient Mobs officially supports fabric for Minecraft 1.20.1, 1.20. The Mado dashboard automatically detects incompatible loader combinations.

Server lagging with BetterNether Ambient Mobs – how to optimize performance?

Recommended RAM: 4 GB (per 8 players). Use /spark profiler to check if BetterNether Ambient Mobs 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.