Adding second depth sounder to C125 MFD

We have a catamaran with an existing thru-hull depth sounder in port hull. I'd like to add a second depth sounder to our C125 (2014) that would show depth below stbd hull. I'm considering use of a fishfinder that is in-hull to provide depth on main chart display, and show fish on the Fishfinder display. I saw a chart some time ago that indicated the C125 didn't support the fishfinder function (though it is one the menu page). I noticed when downloading the latest software update that there may be a software change to support the fishfinder now.

Questions:
- Does the C125 now support fishfinder?
- Which in-hull transducer would you recommend?

I plan to the stbd depth display in a separate data field on the chart display. Please point me to the manual section to perform this function.

Thanks