Hummingbird FF 535?

I have a HB 535 with a thru hull trans.When out on the water it will show bottom structure,but no fish markings.Should it show fish or is it installed wrong?
Thanks Level 4

Welcome to the board Level4,

Fish ID is an option on the 535, and it's default is "off". Did you turn it fish ID on?

Rich

Yes the fish ID is turned on.
Thanks Level 4

Is this a new FF?

Or maybe you're fishing in Santa Cruz where there are no fish?

Rich