

All New Thrills! Shocks! Suspense!
January 17, 1955
1h 22m
EN
Jack Arnold
In a tributary of the Amazon, a monster – half-man, half-fish – is captured and placed in a reservoir in a Florida national park to be observed by scientists.

John Agar
Prof. Clete Ferguson

Lori Nelson
Helen Dobson

John Bromfield
Joe Hayes

Nestor Paiva
Captain Lucas



William Alland, Martin Berkeley
167
Grandon Rhodes
Jackson Foster

Dave Willock
Lou Gibson

Robert B. Williams
George Johnson

Charles Cane
Police Captain

Loretta Agar
Woman on Boat (uncredited)

Bill Baldwin
Patrol Boat Dispatcher (voice / uncredited)

Universal Pictures
US

Universal International Pictures
US