Answer:

piranhas

Answer	Crossword Clue
PIRANHAS	Predatory swimmers
PIRANHAS	Amazon menaces
PIRANHAS	Fish you don't want to be biting

PIRANHAS	Voracious fish
PIRANHAS	Vicious fish
PIRANHAS	Fierce fish
PIRANHAS	Vicious sorts
PIRANHAS	Amazon dangers
PIRANHAS	Leader of Persia (shah's land) owns snappy fish (8)
PIRANHAS	Hunting school?
PIRANHAS	Toothy fish

PIRANHAS	Amazon carnivores
PIRANHAS	Toothy swimmers