FC Barcelona B was created in 1970.
FC Barcelona Bàsquet B was created in 1997.
FC Barcelona b has been in the Liga BBVA so I assume that they have played against FC Barcelona a
Fc Barcelona
FC Barcelona Hoquei was created in 1942.
FC Barcelona Regal was created in 1926.
FC Barcelona Futsal was created in 1986.
FC Barcelona Handbol was created on 1942-11-29.
FC Barcelona Rugby League was created in 2008.
FC Espanya de Barcelona was created in 1905.
FC Barcelona Museum was created on 1957-09-24.
FC Barcelona was founded on November 29, 1899. So it was been in existence for 111 years.
In a real match - No. Teams are not allowed to play their 'B' or "youth teams" in any professional league or tournament. FC Barcelona B actually qualified for the playoffs for the Spanish Primera Division a few years ago, but they were not allowed because the real FC Barcelona is already in that league. In addition, FC Barcelona B are not allowed to participate in the Spanish Cup, because again, the real FC Barcelona participate in that cup.