Diesel & The Foolish Fish Cars is a Potential Plotlines episode.


Diesel wants to show the engines diesels can pull fish cars to the docks, but he ends up falling in water. Duck rescues him. Diesel is sent away by Sir Topham Hatt.


  • Thomas
  • Edward (cameo)
  • Henry (cameo)
  • Gordon (non-speaking role)
  • James (cameo)
  • Percy (cameo)
  • Toby (cameo)
  • Duck
  • Donald & Douglas (cameo)
  • Oliver (cameo)
  • Emily (cameo)
  • Diesel
  • Sir Topham Hatt
  • Trucks

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