What does the cryptic crossword clue "Fish around end of jetty as test (3,3)" mean?

The definition part of the clue is "Fish". The answer is TRYOUT. Explanation: TROUT [fish] round [jett]Y

Fish around end of jetty as test (3,3)

Guardian Puzzle #27784 10 Across 2019-04-02

Definition

Fish

Explanation

TROUT [fish] round [jett]Y

Source: Fifteensquared

Answer

TRYOUT