What does the cryptic crossword clue "Fish: it's angry when provoked (8)" mean?

The definition is "Fish:". The wordplay uses an anagram. anagram of IT'S + ANGRY = STINGRAY; definition: "Fish:" The answer is Stingray.

Fish: it's angry when provoked (8)

Telegraph Prize Cryptic #3025 | 31 Across | 2019-10-13 flower