"Piranha"

"Piranha" ~ 1978

Netflix description = When a school of mutant piranha is accidently released into a river, and headed straight for a kids summer camp, its up to investigator Maggie McKeown and local woodsman Paul Grogan to prevent the potential carnage.
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I love creature features, and there is a reason why this is still a classic.  For the time (1978) it was very bloody and gory, now its just entertaining.

My score 4/5