I installed cachyOS and i wanna try cutefish theme in cachyOS, can i somehow try cutefish?
Hi and welcome 
,
Cutefish is a own Desktop Enviroment based on kwin.
Sadly it appears to be unmaintained since 2 years, so I would not suggest to install it.
We are also planning to remove this in the near future, if there wont be any activity anymore.
Anyways, the installer does give you the option to install cutefish at the online installation, it is unclear how good it works, since it still relays on Plasma 5.