The Fisch Aquarium Customization update is finally here, and we have to say, it brings a lot more than just a fresh coat of paint to your personal tank. If you are someone who has been using the aquarium purely for cash and XP, this update is going to change the way you think about it completely. Let us break down everything that is new and why it actually matters.
What Is the Aquarium Customization Update?
The Aquarium Customization update rolled out on June 13, 2026, and it gives players the ability to collect and place furniture around their Personal Aquarium freely. This is a major shift from the earlier layout. Previously, the aquarium was a fairly static space. You could equip fish for cash or XP, and that was about it. Now, we have a proper customization system that feels much more like a personal space than just a passive income tool.

The update also comes with its own limited-time event, running from June 13 to June 15, 2026. During this window, players can earn exclusive decor, backgrounds, tank upgrades, and unique fish by completing special admin-run challenges. These include events like Super Sized, Mega Mayhem, and the Corruption event. Each challenge offers specific rewards, so you will want to participate in as many as you can before the window closes.
A Completely Reworked Aquarium Menu
One of the biggest changes we noticed right away is how clean the new aquarium interface looks. The entire personal aquarium menu has been redesigned. It now shows three distinct reward tabs: XP, cash, and items. You can switch between them easily on the left side, and everything feels organized in a way it never was before.

There is also a dedicated Customize button and a separate Edit Layout button, which lets you rearrange or strip down your aquarium however you like. We think this is genuinely useful. The old space felt a bit cluttered with preset furniture already taking up room. Now, you actually have control over what stays and what goes.
The Items Tab Is the Real Game Changer
Here is the part that most players are going to care about most. The aquarium now lets you equip items directly alongside your fish, and these items contribute to your hourly rewards. This means you can now use relics, potions, and other valuables to generate passive item income every hour.

The item pool available from the aquarium is already quite rich. Here is a quick look at what you can get:
- Luck Potion, Lure Speed Potion, All-Season Potion, and Glitched Potion
- Thalass Essence, Tide Essence, and Requis Essence
- Hunt Totems, including Kraken, Megalodon, Scylla, and Colossal Dragon
- Cosmic Relics and Twisted Relics
- Clearcast Totems, Bloop Whistle, Shark Whistle, and all base eggs
For players deep into the Crew’s grind, this changes the equation entirely. Relics and potions are two of the most resource-intensive things to stockpile right now. Getting them passively through your aquarium, especially if you are running high-rarity fish like Exalted or Cosmic Relics in your slots, is a genuine advantage. The item rate per hour scales with rarity, so quality matters here.
How to Maximize Your Aquarium After This Update
We want to give you some practical advice beyond just listing what is new. The aquarium runs at full efficiency only when you are online. Offline earnings drop to 25% of your normal hourly rate, so if you are chasing rare item drops like Exalted Relics, try to claim them during active sessions. Logging in every hour when you are online gives you the best return.
Fish food still plays a major role. Splash Snacks in particular can meaningfully improve your chances of pulling rarer items from the pool. For players who are already maxed out on cash and XP, the Splash Snacks investment is worth it purely for item farming. You can fill your aquarium with high-rarity fish and then let the item tab do the heavy lifting.
One thing to keep in mind: duplicate fish in your aquarium reduce their individual efficiency. The game applies a penalty when you add more than one copy of the same fish. So diversifying your aquarium lineup is always the smarter play.
Also Read: Noiseform Rod in Roblox Fisch – How to Get It and Complete the Full Questline
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I am Tanmoy Nath, a gaming writer and Roblox enthusiast with over 6 years of experience covering online games. I have been playing Roblox since 2022, with a deep focus on games like Fisch, Grow a Garden, Paradox, and popular tycoon titles. At Fans First Booyah!, I write beginner guides, tier lists, and update breakdowns – all based on hands-on gameplay rather than secondhand information. My aim is to help both new and experienced Roblox players get the most out of every game they pick up.
