This Episode featured Brady’s experience breeding paradisefish in an outdoor container pond.

Here is a link he mentioned (off the air I think) that helped inspire him:

http://www.aquarticles.com/articles/ponds/Sipes_Summer_Tubbin.html

Here’s a site with some good general information and pictures on paradisefish:

http://www.tropicalfishkeeping.com/profiles/paradise-fish/