Dolphin doesn't recognize catfish as being installed

After installing catfish

I expected it to be found in the “More Search Tools”, but no such luck:

Dolphin lists catfish as “not installed”. Any idea on how to fix this?

From apps:catfish:start [Xfce Docs]

Catfish is a handy file searching tool for Linux and Unix. The interface is intentionally lightweight and simple, using only GTK+3.

I don’t think it is meant to be integrated with Dolphin. As suggested try using catfish as a standalone app and launch it from the application launcher.

Would it be possible to integrate opening catfish in the context menu, so it would use the current directory as the starting point for searches?

Edit: nevermind, Dolphin lets me open a folder with catfish in the context menu already.