Something Fishy Going On!/References

• This is the 100th episode as a whole.
• This episode was shown first in Australia in September 2021 and in Central and Eastern Europe and Deutschland in Germany in October 2021.
• This episode aired exactly a year after Episode 5118 premiered on HBO Max.
• The episode's title is a reference to the same phrase meaning that there's something strange going on.
• This episode was shown on Nick Jr in the UK on Saturday 22nd January 2022.
• This is the 23rd episode of Season 5 in production code order.
• In the story The Midnight Zone is a reference to the TV series The Twilight Zone.
• The episode features the return voices of Ashley (Elizabeth) Gerrard and Matthew Gerrard since their previous appearances on Guppy Style! Part 1 and Part 2 almost 6 years ago.
• This episode aired right after Mar10 day.
• This Episode Aired 9 Years After Sir Nonny the Nice Aired.
• This episode was made in 2021.
• Ending quote(s): "Woo hoo! Sign me up!" (Anglerfish).