Southern banded guitarfish
The southern banded guitarfish (Zapteryx xyster), also known as the witch guitarfish, is a species of fish in the Trygonorrhinidae family found at reefs and other habitats from shallow water to a depth of  in the tropical East Pacific. It ranges from Mazatlan, Mexico, to Colombia, but it likely also occurs off Ecuador and Peru.It is threatened by habitat loss. It is closely related to the more northernly distributed banded guitarfish (Z. exasperata). References

Zapteryx
Fish of Colombia
Fish of Ecuador
Western Central American coastal fauna
Fish described in 1896
Taxa named by David Starr Jordan 
Taxa named by Barton Warren Evermann
Taxonomy articles created by Polbot