How to Unlock Stellar Vengeance in Fisch – Requirements
Published 30 Aug 2026, 8:36 am · 4 min read
If you’re trying to unlock the secret Stellar Vengeance skin in Fisch, you might be wondering where to start and what you actually need to do. The skin is tied to a specific fish and a hidden interaction, so you won’t simply find it sitting somewhere in the world waiting to be collected.
In this guide, I’ll walk you through everything you need to obtain Stellar Vengeance, including the rod you need, the Treble Bass you have to catch, and where you need to take it. The process is fairly simple once you know the location, but the secret room and final interaction can be easy to miss.
I’ll also explain exactly what to do once you reach Boral Pines and how to trigger the skin. So, if you’re ready to add Stellar Vengeance to your collection, let’s get started.
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How to Unlock Stellar Vengeance in Fisch – Requirements
Before you head to the secret location, you’ll need to prepare one important item.
The main thing you’re looking for is a Synth Treble Bass.
The Treble Bass is the fish required for the interaction, but it needs to have the Synth mutation. Because of that, you’ll need to use the appropriate rod that allows you to obtain the fish with Synth.
Make sure you have the Synth Treble Bass in your inventory before traveling to the next location. Without it, you won’t be able to complete the secret interaction.
Catch a Synth Treble Bass
Your first goal is to catch a Treble Bass with the Synth mutation.
Head to the appropriate fishing area and use the required rod to fish for the Treble Bass. The important part here is making sure the fish has the Synth mutation.
I recommend checking the fish carefully before moving on. You don’t want to travel all the way to Boral Pines only to realize that you caught the wrong version.
Once you successfully have a Synth Treble Bass, you’re ready to move on.
Boral Pines Secret Room
After getting the correct fish, make your way over to Boral Pines.
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Once you’re there, you need to find the secret room. If you’ve already been working on other secret skins in Fisch, you may recognize the location, as the room is used for this type of hidden interaction.
Head inside the secret room and look for the piano.
This piano is where you’ll use the Synth Treble Bass to trigger the Stellar Vengeance unlock.
How to Unlock Stellar Vengeance
Once you’re standing in front of the piano, equip your Synth Treble Bass.
Hold the fish out in front of the piano and then start clicking repeatedly in front of it.
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The important part is to keep the Synth Treble Bass equipped while interacting with the piano. Simply having the fish somewhere in your inventory isn’t enough for the interaction.
Spam-click in front of the piano until the secret interaction activates.
Once it works, you’ll obtain the Stellar Vengeance skin for the Stellar Wave Melody.
Stellar Vengeance Skin Showcase
After unlocking the skin, you can equip it and take a look at the new appearance.
The Stellar Vengeance skin has a noticeably different visual style and gives the rod a cool overall appearance. There isn’t a completely custom UI attached to it, so most of what you’re getting is the visual design of the rod itself.
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The rod also has music associated with it. If you’re recording gameplay or making videos, keep that in mind because you may want to mute the music depending on how you’re using the footage.
The VFX can also be difficult to see clearly during normal casting, but the skin itself still looks great.
Stellar Vengeance Unlock Checklist
If you want a quick checklist before starting, make sure you have these things ready:
• Get the required fishing rod.
• Catch a Treble Bass.
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• Make sure the Treble Bass has the Synth mutation.
• Travel to Boral Pines.
• Enter the secret room.
• Find the piano.
• Hold out the Synth Treble Bass.
• Spam-click in front of the piano.
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• Claim the Stellar Vengeance skin.
That’s all you need to do to obtain the secret Stellar Vengeance skin in Fisch. The hardest part is really getting the correct Synth Treble Bass, because the final piano interaction itself is quite straightforward once you know where to go.
If you’re already familiar with the secret room in Boral Pines, you should be able to complete the process pretty quickly. Just remember to bring the correct Synth Treble Bass with you and make sure you’re holding it out when you interact with the piano.
Once you’ve unlocked it, you can equip Stellar Vengeance and enjoy the new look while fishing. It’s a neat little secret for anyone who likes collecting the more unusual skins in Fisch.
