Descripción de 173. Something Fishy:

Season 7, Episode 17 Arthur is still learning the ways of the railway and during his time on the island gains a liking for the seaside fishing village. When the Fat Controller opens the offer of a route to the village for fish traffic, none of the engines except Arthur show any interest, but he is too shy to step forward. In the end Thomas is selected to run it, much to both his and Arthurs disappointment. Later, Thomas is grumpily pushing the fish vans to the dockyard when some faulty points send him on a crash-cause into a tide-pool. The trucks are unharmed, but the fish slowly begins to root in the sun. Arthur is summoned to the rescue and delivers the trucks to the dockyard just in time. Thomas happily hands over the job of looking after the fishing village route to Arthur, and it is gladly agreed upon. Arthur is now a much happier engine.