Well not really but it is close enough to report on even if it isn’t fish related. In a nature reserve in Italy in the town of Prato, Tuscany, there is a deer that has only one horn in the center of its head. The dear, named unicorn, was born in captivity in the research area of the park and is believed to be a genetically anomaly. Another theory suggest that his unicorn look might be due to an injury the deer might have suffered when young. Although deers sometime only have one horn it is very rare, if not unknown to have a deer with one horn in the middle of the head. More commonly they just lack the left or the right horn. It has been suggested that this anomaly regardless of it cause might be the source for the myth about the unicorn.

You can read more about it and see pictures of the deer by clicking the link below.