Raspberry bearing fruit and not bearing fruit WHY?

Hello.
I got some Raspberry plants from my neighbors. I planted them last autumn. Now this spring they started growing. One plant has lighter green leaves and made some fruits already. BUT there is a plant with slightly darker plants and it bears NO fruit what so ever. What's do you think can be wrong with it ? Thanks

 

Maybe they cut the wrong canes out. Young canes bear fruit.

Liz

 

aha.. so old canes can be short and tiny also ? when they all started they were pruned and just a few inches from the floor Thanks