Cast
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 (Acting)
Lori Nelson (Acting)
John Bromfield (Acting)
Nestor Paiva (Acting)
Grandon Rhodes (Acting)
Dave Willock (Acting)
Robert B. Williams (Acting)
Charles Cane (Acting)
Bill Baldwin (Acting)
Diane DeLaire (Acting)
Clint Eastwood (Acting)
Brett Halsey (Acting)
Don C. Harvey (Acting)
Robert F. Hoy (Acting)
Bert Stevens (Acting)
20 May 1957
24 April 1955
24 April 1989
9 May 2014
14 December 1955
26 April 1956
15 May 1981
17 August 1975
15 September 2019
24 March 2017
25 December 2007
5 March 1954
16 August 2023
3 March 2021
2 September 2013
28 December 2022
14 March 1972
15 September 2021
5 November 2014
1 December 2017
13 May 1955