Making money in Fisch can feel like a grind, but with the introduction of Aquariums, players now have a powerful way to generate income even while AFK. If you set things up right, this method can bring in millions per day. Here’s a full guide on how Aquariums work, how to maximize profits, and why this is currently the best money-making strategy in the game.
- NEW METHOD – 20 November 2025
How Aquariums Work in Fisch
Aquariums unlock at level 25, and once available, you can place rare items inside them to passively generate money. Instead of selling rare items directly for a one-time payout, Aquariums let you earn 25% of an item’s value over time, continuously producing income while you’re offline. For example:
- Selling a Fragment Glitch Shades nets around 700,000 coins instantly.
- Placing it in an Aquarium instead allows you to earn more than that over time, plus bonus rewards like Tempest Totems, Eclipse Totems, Shark Heads, and Exalted Relics.
This makes Aquariums an investment tool rather than a quick cash-out system.
How to Get Rare Items for Aquariums
The best source of rare items in Fisch is through Admin Abuse events, which usually happen every update (often on Saturdays). These events shower players with rare drops such as Glitched Caps or Fragment Glitch Shades. Instead of selling these right away, stack them inside your Aquarium to turn them into long-term profit machines.
Boosting Your Aquarium Profits
To get the most out of your Aquarium:
- Expand Your Slots – Invest part of your earnings into unlocking more Aquarium slots. More items inside means more passive income.
- Use Fish Food – Buying and applying Fish Food provides a small boost to your Aquarium’s efficiency.
- Appraise Rare Items – Head to Treasure Island using a Traveler’s Whistle, then visit the Treasure Appraiser NPC. Appraising items can multiply their value, meaning they’ll generate even more profit when placed inside your Aquarium.
Example: A Glitched Cap worth 700k can jump to 1.2M+ after a good appraisal.
How Much Money Can You Make?
With just a few rare items appraised and placed in Aquariums, you can easily pull in:
- 1 million coins per hour offline
- Around 24 million coins per day
- With more slots and high-value items, you can push closer to 100 million daily
On top of money, you’ll also receive rare rewards like Exalted Relics, which are notoriously difficult to farm elsewhere.
Best Methods to Get Money in Aquariums
The normal fishing route is the easiest way for most players to start earning big numbers. You don’t need rare items or high-end gear. The setup only requires an Aurora Totem and either the Luminous Oath or Runius Oath rod. You can use stronger rods like Fabulous or Tryhard, but this guide keeps things accessible for all players.
The key enchants you want on your rod are Sea Overlord and Sea Prince. These two increase fish size, which directly boosts your profits. After that, head to Sunstone. This area is ideal because the exotic fish here, the Tortuga, sells for high base value and appears often enough to make consistent income.
Using Mistworms or Luminous Larvae will help you get better catches, and popping a Sundial plus Aurora boosts your chances even more. You can add extra items like glitch potions or rainbow totems if you have them, but the method still works without them.
If Sunstone isn’t your style, the Strange Whirlpool is another strong spot. There, your main target becomes the Depths Key, which has solid value and is easier to reel in. Both areas give you reliable money, and with the right setup you can reach around 50–60 billion an hour.
Improving Your Aquarium for Long-Term Bills
Even after the nerfs, aquariums can still produce huge profits if you fill them with the right fish. The main goal is to catch fish with high weight, good multipliers, and strong mutations. Leviathans remain the top choice for aquarium farming, but Colossal Blue Dragons are easier to spawn and can still beat some Leviathans in value.
The best way to farm aquarium fish is by using the Evil Pitchfork paired with Glowworm bait. Glowworms now give an 8x mutation multiplier, which guarantees a mutation every catch. This makes the grind easier because heavy, mutated fish carry the most value. The goal is always to get a large fish with a good mutation and a size-boosting passive, since both directly improve their aquarium worth.
You can also use the “Equip Best” button before selling your fish. Sometimes a fish you almost sold might actually be perfect for the aquarium. With the new rarity merge and value changes, size and mutation matter even more now, and good rolls can make hundreds of thousands per fish. Farming Leviathans is possible with teamwork, but if you’re solo, Colossal Blue Dragons are much easier to spawn with Sundials and still give strong results.
If you’re looking for the fastest way to get rich in Fisch, Aquariums are hands down the best method right now. Start by participating in Admin Abuse events to stock up on rare items, appraise them for maximum value, and then let your Aquariums do the work. Combine this with slot upgrades and Fish Food boosts, and you’ll be earning millions daily without constant grinding.