Which character in Fish Licence also appears in the Dead Parrot sketch?

The character in “Fish Licence” who also appears in the “Dead Parrot” sketch is Eric Praline.

John Cleese plays Praline, an agitated customer whose bizarre disputes with officialdom become recurring Monty Python material. In “Fish Licence,” Praline tries to obtain a licence for his pet halibut, Eric, while insisting that unusual animals must be properly documented. The clerk’s refusal sends the conversation into increasingly surreal territory.

Praline first became famous in the “Dead Parrot” sketch, where he returns a supposedly dead Norwegian Blue parrot to a pet-shop proprietor played by Michael Palin. The character is often called Mr Praline in descriptions of that sketch, but “Eric Praline” is the character’s full name, so the stored answer is canonical rather than merely approximate.

The two sketches are linked by Praline’s signature combination of righteous outrage, pedantic argument and escalating absurdity. “Fish Licence” first aired in 1970, after the original “Dead Parrot” sketch had already established Praline as one of the show’s recurring characters.