
Hadean Depths
Adds 50+ new fish and completely reworks fishing progression!
Screenshots





About this Mod
A Fishing Addon that currently adds 60+ Unique Fish to spice up vanilla fishing! Catch and butcher new and exotic fish for unique items that can be used in crafting and cooking! The mod also adds:
- 5 New Fishing Rods!
- 8 New Tools!
- 1 New Armor Set!
- 60+ Fish, categorized by Rarity and Type!
- A new Fish Butchering mechanic!
- 16 new Food items!
Every fish, treasure, and junk can be found in different biomes, weathers, heights, time of days, etc. so get fishing! The mod features a fully fleshed out advancement progression to help you along your fishing journey.
Wiki
Here is the (Hopefully Accurate) Fish, Junk, and Treasure Loot Tables that should give you all the information you need to catch every fish. I'll do my best to upkeep these, but ideally I will integrate an in-game system to resolve the need for this!
Update 1.1.0 - Magmatic Expansion
The first major update for the mod, adding the lava fishing mechanic that can be accessed by upgrading a netherite rod with a magmatic smithing template (A rare item that can be fished up in Davy Jones' Locker) and casting into lava. The update adds:
- ~20 new fish!
- Lava fishing!
- New late game furnace
- Mod compatability by seperating custom rods from vanilla systems
- New fishing rod for compatability
- A couple new food items and 10+ fish butchering drops
Quick Tutorial for the Butchering System
Craft the Butchering Hook using the following recipe:

Place the butchering hook down and right click with any fish to place it on the hook.

Finally, right click the fish or the hook with a shear to butcher it and receive the drops listed in the above Spreadsheet!
Available Versions
How to Install Hadean Depths on Your Server
Order Server
Order a Minecraft Java server with at least 3 GB RAM (4 GB recommended).
Set neoforge Loader
In the panel under "Egg", select the neoforge loader and matching Minecraft version (1.21.4).
Install Mod
Open the mod browser in the dashboard and search for "Hadean Depths". Click "Install" – done! Alternatively, upload the .jar via SFTP to the /mods folder.
Compatibility
Mod Loaders
Minecraft Versions
1.21.4
Server-side
✓ RequiredRecommended RAM
4 GB(min. 3 GB)Frequently Asked Questions
Hadean Depths server crashes on startup – what to do?
Most common cause: wrong neoforge 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 (1.21.4). You can switch loaders with one click in the panel.
Is Hadean Depths compatible with neoforge?
Hadean Depths officially supports neoforge for Minecraft 1.21.4. The Mado dashboard automatically detects incompatible loader combinations.
Server lagging with Hadean Depths – how to optimize performance?
Recommended RAM: 4 GB (per 8 players). Use /spark profiler to check if Hadean Depths 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.
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Rent Modded Server
Install Hadean Depths with just one click on your server.