Quarks, as far as our current understanding goes, are considered to be fundamental particles. In the framework of the Standard Model of particle physics, quarks are elementary particles and are considered to be the building blocks of protons, neutrons, and other hadrons.
According to our current understanding, quarks are not considered to be waves in the same sense as electromagnetic waves or quantum mechanical waves. Instead, they are described as point-like particles with no known substructure. They are considered to be fermions, a class of particles that obey the laws of quantum mechanics, including the Pauli exclusion principle.
It's important to note that quantum particles, including quarks, can exhibit wave-like behavior in certain experimental setups. This is known as wave-particle duality, where particles can exhibit characteristics of both particles and waves, depending on the experimental context. However, quarks themselves are not fundamentally described as waves, but rather as discrete entities within our current understanding of particle physics.