Sharp-Teethed, Long Predatory Fish
Puzzle 18 of Aquarium Easy Pack
Question is: Sharp-Teethed, Long Predatory Fish
and the answer is: BARRACUDA
Word Meaning:
BARRACUDA — Any large marine fish of the genus Sphyraena that have elongated bodies, a projecting lower jaw, displaying prominent fang-shaped teeth, and are aggressive predators.
Definitions from Wiktionary.