Which breed is 5/8 Angus and 3/8 Beef Fresian?

The breed that is recognized as 5/8 Angus and 3/8 Beef Fresian is Amerifax. This breed was developed specifically by crossing Angus cattle with Beef Fresian, which results in the unique genetic composition that those proportions indicate. The Angus breed contributes desirable traits such as marbling and good meat quality, while the Beef Fresian adds to the breed's growth rate and hardiness. This combination creates a breed that is advantageous for meat production.

Other options listed do not fit this specific genetic makeup. For instance, the Ankina is a breed that has different parental influences, thus not aligning with this precise Angus and Beef Fresian composition. Similarly, Simbra is a cross between Simmental and Brahman, and Red Brangus is a blend of Red Angus and Brahman genetics, both of which do not include Beef Fresian or adhere to the ratios specified in the question. Hence, Amerifax is the correct answer due to its distinct 5/8 Angus and 3/8 Beef Fresian lineage.