The most common and most likely answer to this crossword clue is the 10 letter word FRESHWATER
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More clues leading to the result FRESHWATER
Buddy explains!
The straight part
We know that "What’s swimming in open river? Such a fish" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case what’s swimming in open river? such a fish = freshwater.The cryptic/wordplay part
In cryptic crossword there's often an wordplay/cryptic part as well.This part involves a more complex hint, such as an anagram, homophone, hidden word, etc.
Sadly, We don't have an explanation for this specific crossword clue yet.
What does FRESHWATER mean?
FRESHWATER noun- Water with a very low content of dissolved salt, as opposed to brackish water or salt water.
- A body of fresh water
- Living in fresh water.
- Consisting of fresh water.
- Unskilled as a seaman.
- Neoclassical, in reference to U.S. macroeconomics and economics departments near the Great Lakes.