Fish Heads - 1980 was released on:
USA: 1980
About Us - 2003 Seattle Fish Halibut Heads was released on: USA: 2005
The Marvelous Misadventures of Flapjack - 2008 Fish Heads 1-19 was released on: USA: 26 March 2009
Too Close for Comfort - 1980 Muriel's Fish Story 6-12 was released on: USA: 19 July 1986
One can find more information about fish heads at the safe to eat fish website. The "safe to eat fish" website tells all the healthy fish in addition to information about types of fish heads.
The Fish - 1922 was released on: USA: 7 January 1922
Fish - 2011 I was released on: USA: 13 May 2011
For the fish, yes.
Killer Fish - 1979 was released on: Philippines: 13 November 1979 (Davao) USA: 7 December 1979 South Korea: 21 December 1979 Philippines: 5 February 1980 (Davao) (re-release) Norway: 17 February 1980 Colombia: 5 April 1980 Denmark: 9 May 1980 Mexico: 15 May 1980 Finland: 27 June 1980 Portugal: 9 October 1980 West Germany: 17 April 1981 Turkey: 18 May 1981 France: 23 May 1984 Japan: 21 October 1988 (video premiere)
Bird and Fish - 2013 was released on: USA: May 2013
Fish Cut - 1901 was released on: USA: July 1901
Space Fish - 2013 was released on: USA: March 2013
Fish with the King - 2012 was released on: USA: April 2012