Giant Rat-Tail is a unknown marine fish of North Atlantic Ocean. Length, 6–10 feet. Two observations — one in deep water near Bermuda in the 1930s, an-other above the seafloor in the Gulf of Mexico in the 1960s.
Unknown species of Grenadier or Rat-tail (Family Macrouridae) of exceptional size. Macrourids are deepwater fishes with sharply narrowing tails. There are 285 species, the largest of which is the Giant grenadier (Albatrossia pectoralis), which grows to 5 feet long.