Orange roughy is the table name for a seafood species historically known to scientists as the slimehead. The seafood industry correctly assumed that people would rather eat something called orange roughy instead of slimehead, and now that is the generally accepted common name of the species. The orange roughy is a predatory species that lives on deep seamounts (undersea mountains) in most ocean basins around the world. This species, also known as the Atlantic roughy, is one of the longest living marine fish species, with individuals living for more than 150 years. This longevity, and its other life history characteristics, makes the orange roughy vulnerable to overfishing.