Fisch, much like other Roblox titles, features a ton of things to do and a consistent flow of routine updates in the form of content drops. The upcoming Atlantis update is one such core update to look forward to, and was preceded by the Northern Expedition core update.
The new update is set to launch in approximately a week’s time globally, and a breakdown of the release date, along with its expected contents can be found detailed in the sections below.
When does the Atlantis update for Roblox Fisch arrive?

The Atlantis update for Fisch arrives on January 25, 2025 – that is, this very Saturday. The update is expected to go live at 1 PM GMT or 5 AM PST. This is, assuming that there are no more unexpected delays with the update – which have a very small, but real chance of occurring.
Either way, the update shouldn’t take more than a few hours to initialize.
How long will the Fisch Atlantis update last?
Given that this is a core update, we can expect it to last for 4 weeks at minimum – and so an estimated end date of Saturday, February 22, 2025 can be assumed. As always, this is based on speculation and may change on the actual release of the said update.
What to expect from the Fisch Atlantis update
While the developers have yet to release any official patch notes for the upcoming Atlantis update, we can make a few educated guesses as to what the contents of the patch shall be.
For starters, expect a ton of new fishes to be added – upwards of 36, given that this core update is expected to be larger than the Northern Expedition patch.
Additionally, new rods (including more exotic variants such as the current Rod of the Exalted One) and an updated Bestiary are also to be expected.