Hazedon
English title: Chief Joker
Japanese title: ハゼドン
Type: TV
Source: Unknown
Episodes: 26
Status: Finished Airing
Aired: Oct 5, 1972 to Mar 29, 1973
Broadcast: Unknown
Duration: 25 min per ep
Rating: PG - Children
Studios: Sunrise
Producers: Fuji TV
Genres: Adventure, Comedy
Demographics: Kids

The series focused on a goby fish: Hazedon, who was the offspring of a mermaid and a blowfish. His goal was to travel the world on an adventure with his best friend, Puyang. 

(Source: GoBoiano)