Linked from
The 16 pages that link to Antiparticle, each with the reason it gives.
FermionRelated: Fermions have antiparticles, which are themselves fermions.
Charge conjugationRelated: Charge conjugation maps each particle to its corresponding antiparticle.
AntiprotonNarrower topic: The antiproton is the antiparticle of the proton, a composite particle.
Charged particleRelated: An antiparticle can carry charge opposite to its corresponding particle.
B − LRelated: Antiparticles contribute opposite signs to baryon and lepton number.