Fish That Can Swim Backwards - Crossword Clue Answers ... Nov 17, 2020 · The crossword clue Fish that can swim backwards with 3 letters was last seen on the November 17, 2020. We think the likely answer to this clue is EEL. Below are all possible answers to this clue ordered by its rank. You can easily improve your search by specifying the number of letters in the answer.