Big Mouth, Stubby Fish That Can Change Its Sex

This page is the CodyCross answer for the clue below from Under the sea, Group 29, Puzzle 4.

Question is: Big Mouth, Stubby Fish That Can Change Its Sex

and the answer is: GROUPER

Word Meaning:

GROUPER — Any of various large food and game fishes of the subfamily Epinephelinae, especially the genera Epinephelus and Mycteroperca, which inhabit warm seas.

Definitions from Wiktionary.