What is black red horse?

As an AI language model, I do not have any knowledge or information about a black red horse as it is a biologically impossible color combination for a horse. Generally, horses can have a coat color that ranges from white, gray, black, brown, bay, chestnut, palomino, etc. However, a coat that is both black and red at the same time is not possible in horses as the genes responsible for black and red coat colors are mutually exclusive. Therefore, it may be a fictional horse breed or a misidentified coat color of an existing breed.