* ActorAllusion: Milo thinks Kyle Massey is a magical dude. [[DontExplainTheJoke Kyle Massey is his voice actor]].
* TheCastShowoff: ''Fish School Musical'' has Creator/ChelseaKane show off her singing voice.
* CelebrityVoiceActor:
** Milo and Bea are respectively voiced by Creator/KyleMassey and Creator/ChelseaKane.
** Creator/GeorgeTakei is the bird that helped Milo fly.
** Music/OzzyOsbourne is the Earth Troll.
** Creator/JerryStiller is Principal Stickler
** Creator/RichardSimmons plays Coach Salmons.
** Creator/FeliciaDay is [[GamerChick Angela]].
** Creator/DavidTennant is Oscar's talking brain that the former can see through his head.
* ChannelHop: Since June 2014, reruns air exclusively on Disney XD, with some episodes being advertised as [[BlatantLies brand new]]. Latin America, Brazil, and Poland are also following suit, with previously unaired episodes being shown.
* ChildrenVoicingChildren: Albert Glass was played by Creator/AtticusShaffer, who was around 11-12 when he first did so.
* CrossdressingVoices: Clamantha, a girl, is voiced by Creator/AlexHirsch, a man.
* DawsonCasting: Averted with Albert Glass, who is voiced by 12-year-old Atticus Shaffer. The other students are voiced by people who obviously wouldn't be in high school, 19-year-old Kyle Massey being the youngest.
* TheDanza: Finberley's name is a pun on her voice actor's name.
* HeAlsoDid: Oscar and Clamantha's voice actors, Creator/JustinRoiland and Creator/AlexHirsch (both of whom wrote a few episodes), would go on to create ''WesternAnimation/RickAndMorty'' and ''WesternAnimation/GravityFalls'' respectively. They even did minor voice work in each other's shows.
* KeepCirculatingTheTapes: The series never had a DVD release, nor is there a plan to do so. The entire series is available on iTunes. It was on Disney XD on Demand and its WATCH Disney XD counterpart, but was removed in June 2017 for unknown reasons.
* MissingEpisode: Mr. Warburton said on his blog that there were 60 half-hours produced, but only 59 of them aired when the show finished. In addition, [[http://freshwaterhigh.tumblr.com/post/42313529918/time-for-some-poses-heeeeeeres-milo a crew-run blog has a screencap in a collage that has never been seen in the show]]. (First row from the left, second picture.)
* TheOtherDarrin: From season 2 onward, Principal Stickler is voiced by Creator/JeffBennett.
* OutOfOrder:
** “Get a Yob!” was aired after “Principal Bea”, in which [[spoiler: Nurse Fishington is revealed to be a robot built by Stickler, and she becomes the principal in his place by episode’s end.]]
** "Assignment: Babies" was produced before "Labor of Love", where Mr. Baldwin gave birth and his children appeared in the former.
* ProductionPosse: Many people who worked on the show also worked on ''WesternAnimation/SpongeBobSquarePants'', ''WesternAnimation/TheGrimAdventuresOfBillyAndMandy'' and ''WesternAnimation/{{Chowder}}''.
* ScheduleSlip:
** In 2013, it hit a one-month long hiatus on Disney Channel US that wouldn't have been so bad... if it hadn't got extended another month thanks to a last-minute schedule change.
** It didn't air on Disney Channel Benelux for nearly a year. (Mid-January 2013 to early-January 2014.)
** It also took a year and a half for new episodes to air in Poland and South Korea in June 2014.
* ScrewedByTheNetwork: Canada's Creator/FamilyChannel, despite good timeslots at first, stuck the show Weekend Mornings at 8:30AM, before eventually removing the show in 2012, [[AdoredByTheNetwork for another]] ''Series/TheSuiteLifeOnDeck'' showing.
** Meanwhile in America, Disney Channel usually showed it at 5 in the morning, when kids are usually sleeping. First run episodes aired at a decent time slot, but reruns don't usually have any good times unless they're filler, and even then, ''WesternAnimation/PhineasAndFerb'' usually did the job. A few months after it ended, it eventually got replaced by another Phineas and Ferb rerun.
** That said, to celebrate Noah Z's upcoming cartoon, ''WesternAnimation/PickleAndPeanut'', they aired a marathon of ''Fish Hooks'' on August 7th, 2015. So they at least made up for it.
* ShortRunInPeru:
** In Poland, the Czech Republic, and Romania, the first 22-minute episode had aired around 2 months before its US airing.
** In Latin America, ''Driving in Cars with Fish'' aired the day before its US airing.
** Disney Channel UK aired Fish School Musical a week before it came on in the US. They also premiered "Milo on the Lam" 2 months before its US airing.
** The last few episodes of the second season aired in Asia weeks, even months, before finally airing in its home country.
** Taiwan got a handful of episodes early in August 2013. Those episodes were stretched from September 2013 to January 2014 in its US run.
** Russia started airing episodes ahead of time in October 2013, eventually airing all episodes by December 19, 2013.
* UnfinishedDub: In a number of EMEA markets, the show [[ScrewedByTheNetwork stopped airing new episodes during season 2]] and did not dub season 3. When the show was made available in the US on Creator/DisneyPlus, many of the European dubs that were present did not go past ''Fish Prom'' and skipped ''See Bea Ski/Night at the Loxbury'' for some reason. However, this has since been averted with all but the European Portuguese dub.
** The French dub stopped airing in the middle of season 3. Its initial partial availability on Disney+ suggests that dubbing of this season was never finished. It would eventually be completed around 2021.
** Averted for the German dub. Despite season 3 never airing in Germany, the dub was made fully available when the show launched on Disney+ in the US.
** The Swedish, Norwegian, and Danish dubs were not complete when the show was first added onto the service, but all of season 3 and the missing season 2 episode were available prior to the service's launch in Scandinavia.
** The Italian and European Spanish dubs would also complete the series at a later date, with Italy getting the season added to their local catalog on March 26, 2021.
* WhatCouldHaveBeen: [[http://freshwaterhigh.tumblr.com/post/24154748834/lets-get-this-party-started These]] [[http://freshwaterhigh.tumblr.com/post/24162740276/evolution-of-a-fish-lets-get-this-party-started entries]] on a crew-run blog show the original premises of the series and how it went from there.
** At one point, Angela was going to turn out to be a "werewolf-fish" during the early planning stages of Fish Prom.
** The lyrics to the song "Final Exam" originally focused more on the fact that Milo was getting himself in life-threatening situations to study for the exam.

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