Top 10 New Species List 2018 Spotlight: This 4-Inch Fish Is Top Predator Of The Ocean Floor A small, translucent snailfish is one of the most interesting finds on the top 10 new species list for 2018. The Mariana snailfish, or Pseudoliparis swirei, lives at up to 26,200 feet deep in the ocean. by Alexandra Burlacu