No, there is no direct relationship between antimatter and dark matter in the universe. Antimatter and dark matter are two distinct concepts.
Antimatter refers to particles that have the same mass as regular matter but have opposite electric charges. For example, an antielectron (positron) has the same mass as an electron but carries a positive charge. When matter and antimatter come into contact, they annihilate each other, releasing energy.
Dark matter, on the other hand, is a hypothetical form of matter that does not interact with light or other electromagnetic radiation, making it invisible and difficult to detect directly. It is called "dark" because it does not emit, absorb, or reflect electromagnetic radiation. Dark matter is believed to make up a significant portion of the total matter in the universe, and its existence is inferred through its gravitational effects on visible matter and the large-scale structure of the universe.
Although both antimatter and dark matter are mysterious aspects of the universe, they are distinct phenomena with different properties and interactions. There is no known connection or relationship between the two.