History Main / FiendishFish

* In ''VideoGame/Splatoon2'', the co-op Salmon Run mode is all about fighting through wave after wave of dangerous [[FishPeople Salmonids]] to protect [[CityOfAdventure Inkopolis]] and collect [[GoldMakesEverythingShiny golden Power Eggs]].

* ''Manga/SazanEyes'': during the protagonists raid on the hideout of the [[BodyHorror Hyoma Clan]] beneath a biological research facility, an aquarium in the room suddenly breaks to release a ferocious giant scorpion fish who tries to assault Yakumo repeatedly, even leaping out of the shallow water. Yakumo manages to kill it with Tu Zhao, voicing [[DoesNotLikeSpam his dislike for raw fish]].

* Many of the larger carnivorous prehistoric fish encountered in ''Fanfic/PrehistoricParkReimagined'' prove understandably dangerous animals over the course of the rescue team's (thankfully successful) efforts at rescuing them for the titular zoo. In particular, TheLeader Drew is very nearly killed (or at least [[AnArmAndALeg maimed]]) by a four member school of dunkleosteus, TheSmartGuy Leon very narrowly avoids getting his arm bitten off by an onychodus, and TheChick Alice is forced to very hurriedly flee from an incoming hungry eusthenodon that proceeds to very briefly try to continue chasing her, Drew, and TheBigGuy Adrian on land before having to return to the water. And while the [[PiranhaProblem megapiranha]], [[PikePeril prehistoric lepisosteus]], and several smaller prehistoric sharks prove not quite as immediately dangerous on their initial encounters, they are nonetheless creatures that are treated carefully by the rescue team and park staff.

* Amongst the animals rescued for the titular park in ''Fanfic/PrehistoricEarth'' are the carnivorous prehistoric fish ''Hyneria'', ''Dunkleosteus'', all of which prove to be understandably dangerous creatures for the rescue team to deal with in their efforts at getting them brought to the park.

See also SeaMonster. Compare FeatheredFiend ("general" evil bird trope), NeverSmileAtACrocodile, DeviousDolphins, MonstrousSeal, MonsterWhale, WilyWalrus, GiantEnemyCrab and TentacledTerror for scary non-fish aquatic animals.

** The fish-like Piscine Wyvern, Plesioth, is a very aggressive monster that will bring you harm. Similarly its fellow Piscine Wyverns Cephadrome, Lavasioth, Goruganosu, Aruganosu, [[VideoGame/MonsterHunterWorld Jyuratodus and Beotodus]] are also aggressive monsters that will attack you either on sight or with little provocation.
** Most fish in ''Tri'' are pleasant and friendly, including the ones you can fight rather than just fish. Not so much with the [[ThreateningShark Sharqs]] and Catfish who will attack you on sight.
** In ''VideoGame/MonsterHunterWorld'', the Catfish make a return but are now known as Gajau and will jump out of the water to get you.

** Gyorg, the boss of the Great Bay Temple, is a giant purple fish with a scary set of huge teeth. It is responsible for the murkiness and the dangerous warming of the Great Bay waters, threatening the local Zora population.

** ''VideoGame/TheLegendOfZeldaTwilightPrincess'': Morpheel, the boss of the Lakebed Temple, is a disgusting mix of a cyclopean eel and a coelacanth with anemone-like tentacles around its maw to boot.
** Skullfish are recurring enemies resembling skeletal fish with jaws bristling with sharp teeth. They're generally entirely skeletal besides the usual GlowingEyelightsOfUndeath, but the ones in ''VideoGame/TheLegendOfZeldaTwilightPrincess'' still have some sort of fleshy core inside their ribcages. They are, of course, highly aggressive.

* ''VideoGame/EpicBattleFantasy'': In the fourth and fifth games, there are robot fish enemies in the Waste Disposal Plant and the Iron Fortress, respectively.

* Amongst the animals rescued for the titular park in ''Fanfic/PrehistoricEarth'' are hyneria, dunkleosteus, and {{Megalodon}}. And all three of these species of carnivorous prehistoric fish prove understandably dangerous creatures for the rescue team to deal with in their efforts at getting them brought to the park.

** ''VideoGame/TheLegendOfZeldaMajorasMask'': Gyorg, the boss of the Great Bay Temple, is a giant purple fish with a scary set of huge teeth. It is responsible for the murkiness and the dangerous warming of the Great Bay waters, threatening the local Zora population.
*** The Desbreko, a large skeletal fish, is worthy of mention. Tatl has a very special hatred of them for some reason.

* ''Manga/SazanEyes'': during the protagonists raid on the hideout of the [[BodyHorror Hyoma Clan]] beneath a biological research facility, an acquarium in the room suddenly breaks to release a ferocious giant scorpion fish who tries to assault Yakumo repeatedly, even leaping out of the shallow water. Yakumo manages to kill it with Tu Zhao, voicing [[DoesNotLikeSpam his dislike for raw fish]].

* Many of the larger carnivorous prehistoric fish encountered in ''Fanfic/PrehistoricParkReimagined'' prove understandably dangerous animals over the course of the rescue team's (thankfully successful) efforts at rescuing them for the titular zoo. In particular, TheLeader Drew is very nearly killed (or at least [[AnArmAndALeg maimed]]) by a four member school of dunkleosteus, TheSmartGuy Leon very narrowily avoids getting his arm bitten off by an onychodus, and TheChick Alice is forced to very hurriedly flee from an incoming hungry eusthenodon that proceeds to very briefly try to continue chasing her, Drew, and TheBigGuy Adrian on land before having to return to the water. And while the [[PiranhaProblem megapiranha]], [[PikePeril prehistoric lepisosteus]], and several smaller prehistoric sharks prove not quite as immediately dangerous on their initial encounters, they are nonetheless creatures that are treated carefully by the rescue team and park staff.

* ''Film/DevilFish'' is another ''Jaws'' ripoff that replaces the shark with a non-descript mutant fish-cephalopod hybrid.

** The fish-like Piscine Wyvern, Plesioth, is a very aggressive monster that will bring you harm. Similarly its fellow Piscine Wyverns Cephadrome, Lavasioth, Goruganosu, Aruganosu, [[VideoGame/MonsterHunterWorld Jyuratodus and Beotodus]] are also aggressive monsters that will attack you either on sight or with little provokation.

[[quoteright:350:[[VideoGame/TheLegendOfZeldaMajorasMask https://static.tvtropes.org/pmwiki/pub/images/gyorg.png]]]]

* ''WesternAnimation/MyGoldfishIsEvil'' has Admiral Bubbles, a goldfish who’s also an evil mastermind.

* ''Film/DevilFish'' is another ''Jaws'' ripoff that replaces the shark with a non-descript mutant fish-cepholopod hybrid.

* ''Film/KingKong2005'': In a deleted scene included in the extended cut, the rescue party are attacked by ''Piranhadon'', a giant carnivorous fish living in the mangrove swamps of Skull Island.

* ''Manga/KarakuriCircus'': the cavern system near Koga Village has a giant underground lake which host the local god, a truly gigantic river fish who tries to attack Masaru while he makes his way out of the lake.

* [[{{Oni}} Kawara of the Onigami gang]] from ''Manga/RaveMaster'' uses an enormous, horned fish as his mount. The fish has sharp teeth and even tries to eat Haru in one bite.
* While most of the aquatic threats in ''Manga/{{Toriko}}'' are giant sharks, there are also some dangerous fish, especially in the waters of the Gourmet World. Area Six includes truly rare and dangerous exemplars, including a giant one similar to a pufferfish with an entire fortress (cannons included) on its body.

* ''VideoGame/FarCry4'' takes place in the Himalayan country of Kyrat, so you don't have to worry about getting attacked by [[ThreateningShark sharks]]. Instead, the rivers are occupied by massive Goliath Tigerfish(also known as [[NamesToRunAwayFromReallyFast Demon Fish]]), which violently bite Ajay Ghale any time he comes near them, and can actually kill him unless he punches and stabs them off. The Tigerfish are so violent, they even made their way into ''VideoGame/FarCry5'' and ''VideoGame/FarCryNewDawn''. And that's not even getting into the [[NeverSmileAtACrocodile mugger crocodiles]]... Then again, [[MisplacedWildlife Tigerfish are a purely African fish, so what they're doing in a Himalayan country is anyone's guess]]. A more accurate fish to place in Kyrat might have been the equally dangerous but actually Nepalese goonch catfish.

* ''Manga/SazanEyes'': during the protagonists raid on the hideout of the [[BodyHorror Hyoma Clan]] beneath a biological research facility, an acquarium in the room suddenly breaks to release a ferocious giant scorpion fish who tries to assault Yakumo repeatedly, even leaping out of the shallow water. Yakumo manages to kill it with Tu Zhao, voicing [[DoesntLikeSpam his dislike for raw fish]].