Cryptic crossword clue
Marine fish to exhaust with a rod at sea 6

The most common and most likely answer to this crossword clue is the 6 letter word DORADO

D
O
R
A
D
O

Buddy explains!

The straight part
We know that "Marine fish" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case marine fish = dorado.
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 DORADO mean?

DORADO noun
  1. Coryphaena hippurus, the mahi-mahi or dolphin, a species of fish with a dorsal fin that runs the length of the body, also known for iridescent coloration.

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