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Demetan Croaker, The Boy Frog
(Kerokko Demetan)
Genre Comedy, adventure, Romance, Fantasy
TV anime
Director Hiroshi Sasagawa
Writer Jinzo Toriumi
Studio Tatsunoko Productions
Network Japan Fuji Television
Original run January 2, 1973September 25, 1973
Episodes 39[1]
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Demetan Croaker, The Boy Frog (けろっこデメタン Kerokko Demetan ?), also known as Demetan the Frog and The Brave Frog, is 39 episode anime series by Tatsunoko Productions first aired in 1973.



The story is about Demetan, a poor young frog who becomes friends with a girl frog named Ranatan. Together, they go on many adventures.

Like many of Tatsunoko's series at the time, the show was often sad and sadistic, with Demetan having to deal with natural predators as well as the bullies who rule the pond.

The only versions of the series to reach the English language were two feature-length movie adaptations, edited from the TV series. The two movies, called The Brave Frog and The Brave Frog's Greatest Adventure, tell the entire storyline of the series in heavily-condensed form. The first movie was released on videocassette in 1995 and on DVD in 1999.

Despite the fact that the series was not officially translated in English, the series like the Candy and Heidi series became very popular in other continents such as: Asia, Europe (particularly in France where the entire series was recently was released on DVD), Quebec, Canada and Latin America.


Demetan Croaker, The Boy Frog is an anime series made of 39 episodes of thirty-minutes each. The story is about Demetan a young boy frog that comes from a poor family that he cannot even go to school in his woodland pond community. However, he becomes a friend of a girl frog named Ranatan, a lovely, gentle frog girl who is the daughter of the pond's rich ruler. Naturally her father is quite displeased by this relationship and he seeks to break it up. Nevertheless the young frogs continue with courage and confidence, not only to live their own lives but to guide the heartless leopard frog to a sense of justice and generosity. Gradually the pond community responds to their sincerity and joins them in a march toward a bright future.

Japanese Voice Actors

Extra Production Information

  • Broadcaster: Fuji TV
  • Planning: Tatsuo Yoshida
  • Storyboard(s): Yoshiyuki Tomino
  • Writer(s): Jinzo Toriumi
  • Character Designer(s): Yoshitaka Amano, Tatsuo Yoshida, Masayuki Hayashi
  • Music: Nobuyoshi Koshibe


  • Kerokko Demetan is one of the few anime series that does not have a specific English title. Some of the titles used to name this series are:Child Frog Demetan, Demetan Croaker, Adventures on Rainbow Pond, The Boy Frog, Demetan the Frog, and The Brave Frog.
  • There was a movie of Demetan released in the USA on DVD and VHS titled "The Brave Frog." The movie was a compilation movie made of scenes from the animated series.


  1. ^ [1]

A Second movie was also released in the english language titled "The Brave Frog's Greatest Adventure" which tells the tale of an evil catfish named Bruto.

External links

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