What is the mixture of sperm and fluid called?

The answer is: liquid semen.

The mixture of sperm and fluids is called semen. Semen is the fluid secreted by the male reproductive organs that contains the sperm needed to fertilize the female egg. It consists of secretions from the seminal vesicles, prostate gland, Cowper's gland, as well as sperm. When released, sperm travel through the urethra and are expelled through the penis. Fluid and sperm are essential for sexual reproduction in both humans and animals.

Answer: The mixture of sperm and fluids is called semen. Semen is a substance produced by the male reproductive system, and consists of sperm cells and fluids secreted by the testicles. It is complementary to the male reproductive process, along with sperm production. During intercourse, this mixture is released into the female reproductive system, where it helps facilitate the fertilization of the female egg. Two-thirds of the volume of semen comes from the seminal vesicles and then moves into the urethra.