Stardew Valley Expansions Free

Stardew Aquarium for Stardew Valley

An expansion with a new aquarium and beach you reach by train: donate fish, fill the tanks and unlock rewards and a secret legendary fish. Version 2.3.0.

Author: Project Stardew Aquarium (Gervig91 y equipo) Version: 2.3.0 Compatible: Stardew Valley 1.6.x (updated for 1.6.13) with SMAPI 4.x Updated: 27 Feb 2025 Reviewed: 24 Oct 2026
Download Stardew Aquarium

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What this mod does

Stardew Aquarium, by the Project Stardew Aquarium team, adds an aquarium and a large beach that you travel to by train for 20g. The idea is simple and addictive: donate the fish you catch to fill its animated tanks, like an ocean version of the museum.

What it adds

  • An outdoor beach map and the aquarium interior, open from 10:00 AM to 9:00 PM except during festivals.
  • Animated tanks that fill up with each donation, and rewards such as a blobfish mask, the curator’s hat for completing it and a legendary bait.
  • Three shops: a beach shop, an ice cream shop and the submarine, with fishing gear that expands as you donate.
  • A secret legendary fish that opens a hidden room when you donate it.

Requirements and compatibility

It requires SMAPI, Content Patcher, Custom Companions, SpaceCore, Central Station, Custom NPC Exclusions, Esca’s Modding Plugins and HxW Tilesheets. Version 2.3.0 (February 27, 2025, 5.4 MB) builds on a rewrite by Pathoschild that removed Json Assets. It can be added to or removed from any save, and it works in multiplayer and on Android (there, donations are made from a shop-style menu).

It accepts fish from SVE, Ridgeside Village, East Scarp and other mods, and includes a Spanish translation.

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Highlights and things to keep in mind

Highlights
  • An original idea that ties in really well with fishing
  • Can be added to or removed from any save
  • Works in multiplayer and on Android
  • Includes Spanish and accepts fish from the big expansions
Keep in mind
  • Eight requirements besides SMAPI
  • With Teh's Fishing Overhaul you only catch trash on the new map unless you apply a fix from the forum
  • No changes since February 2025

Requirements

  • Stardew Valley 1.6.x (PC or Android)
  • SMAPI 4.x
  • Content Patcher, Custom Companions and SpaceCore
  • Central Station, Custom NPC Exclusions, Esca's Modding Plugins and HxW Tilesheets

How to install it

  1. Install SMAPI first (see its mod page) and launch the game once with it to make sure it works.
  2. Install the requirements: Content Patcher, Custom Companions, SpaceCore, Central Station, Custom NPC Exclusions, Esca's Modding Plugins and HxW Tilesheets.
  3. Open the Stardew Aquarium page on Nexus Mods, go to the Files tab and click Manual download on the main file (Stardew Aquarium 2.3.0). You need a free Nexus account to download.
  4. If you're updating from an old version, delete the previous folder first. Extract the .zip outside the game folder and move the resulting folder into the Mods folder, inside the game folder.
  5. Launch the game with SMAPI and take the train to the aquarium using the ticket machine at the station.

Version history

  1. 2.3.027 Feb 2025Current

    Adds the Nyapu portraits option

  2. 2.2.08 Feb 2025

    Replaces the Train Station dependency with Central Station

  3. 2.0.029 Dec 2024

    Rewrite by Pathoschild: drops Json Assets and Shop Tile Framework and moves to SpaceCore

Common problems

Can I add it to an existing save?

Yes. The page says it can be added to or removed from any save at any time.

Can I donate fish from other mods?

Yes, from many: SVE, Ridgeside Village, East Scarp, Lunna, More New Fish and others listed on the page.

Does it work on Android?

Yes. On Android, donations are made from a shop-style menu where each fish is listed at 0g.

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