Support for installing Fiji via Flatpak is in the works see Alternatively you can install the no-JRE version which defaults to the Mac Java and will limit some native library functionality that does not yet have Arm64 support ().
MacOS Arm64 Note: The default MacOS download should run on Arm64 via the Rosetta translator ((software)) which may come at some performance cost.However, Fiji (like ImageJ) should run on any system for which a Java 8 runtime is available (Solaris, Raspbian, etc.). Fiji is supported on the following systems:
