History Main / ColdBloodedWhatever

** The Colo Claw Fish from ''Film/ThePhantomMenace'', a SeaMonster living in the oceans of Naboo, has crocodile-like jaws combined with an eel-like body and bioluminescence. Then again, it ''is'' an alien...
** The Hutts also count, their features resembling a combination of amphibians, reptiles, and mollusks.

* Creator/HPLovecraft's Franchise/CthulhuMythos sometimes blends the traits of fish, amphibians, and reptiles into weird aquatic {{monstrous humanoid}}s, such as ''Literature/TheShadowOverInnsmouth'''s Deep Ones (described as "[[FishPeople fish]]-[[FrogMen frog]] things") or the soft-skinned, [[FrogMen amphibious]] folk of Ib and their god Bokrug the Great Water Lizard in ''Literature/TheDoomThatCameToSarnath''. Adaptations and appearances in other media will frequently lean even further into this trope by slapping some tentacles on there, too - in the popular consciousness, nothing is really Lovecraftian unless it has tentacles.

* In ''Franchise/TheElderScrolls'' series, the Argonians are a "[[BeastMan Beast Race]]" of swamp-dwelling LizardFolk. Their physiology is chiefly and visibly reptilian, however they also have elements of amphibians (said to be "sequential hermaphrodites", meaning they can switch genders, though this hasn't been brought up in-game other than from a [[UnreliableExpositor dubious source]]) and fish (gills on their necks which allow them to breath underwater, and shows up in-game as a Water Breathing racial ability).
* The Zora of ''Franchise/TheLegendOfZelda'' are mostly portrayed as FishPeople, but ''[[VideoGame/TheLegendOfZeldaMajorasMask Majora's Mask]]'' reveals that they are born as limbless tadpoles, which is a trait more in line with amphibians, while ''[[VideoGame/TheLegendOfZeldaBreathOfTheWild Breath of the Wild]]'' depicts them with sharp claws on their hands and feet, which is more in line with reptiles.

* The ''VideoGame/{{Warcraft}}'' franchise features the Murlocs, who are semi-intelligent creatures halfway between FishPeople and FrogMen, with piranha-like heads and fins on their back, but frog-like limbs and an amphibious lifestyle.

[[folder:Web Comics]]

* The Zora of ''Franchise/TheLegendOfZelda'' are mostly portrayed as FishPeople, but ''[[VideoGame/TheLegendOfZeldaMajorasMask Majora's Mask]]'' reveals that they are born as limbless tadpoles, which is a trait more in line with amphibians, while ''[[TheLegendOfZeldaBreathOfTheWild Breath of the Wild]]'' depicts them with sharp claws on their hands and feet, which is more in line with reptiles.

* The Zora of ''Franchise/TheLegendOfZelda'' are mostly portrayed as FishPeople, but ''[[VideoGame/TheLegendOfZeldaMajorasMask Majora's Mask]]'' reveals that they are born as limbless tadpoles, which is a trait more in line with amphibians.

* Creator/HPLovecraft's Franchise/CthulhuMythos sometimes blends the traits of fish, amphibians, and reptiles into weird aquatic {{monstrous humanoid}}s, such as the ''Literature/TheShadowOverInnsmouth'''s Deep Ones (described as "[[FishPeople fish]]-[[FrogMen frog]] things") or the soft-skinned, [[FrogMen amphibious]] folk of Ib and their god Bokrug the Great Water Lizard in ''Literature/TheDoomThatCameToSarnath''. Adaptations and appearances in other media will frequently lean even further into this trope by slapping some tentacles on there, too - in the popular consciousness, nothing is really Lovecraftian unless it has tentacles.

[[folder:Films -- Animated]]

* ''Film/ThePhantomMenace'': The Colo Claw Fish, a SeaMonster living in the oceans of Naboo, has crocodile-like jaws combined with an eel-like body and bioluminescence. Then again, it ''is'' an alien...
** The Hutts also count, their features resembling a combination of amphibians, reptiles, and mollusks.

[[folder:Webcomics]]

* Several species of salamander retain functional gills into adulthood, and thus live more like fishes than typical tetrapods.

* The ''Film/{{Monsterverse}}'' incarnation of Godzilla, instead of being a dinosaur, is re-imagined as an aquatic Permian reptile that somehow possesses both lungs and gills.

* ''Film/ThePhantomMenace'': The Colo Claw Fish, a SeaMonster living in the oceans of Naboo, has crocodile-like jaws combined with an eel-like body and bioluminescence. Then again, it ''is'' an alien. . .

* Myth/ChineseMythology: Longs are often seen as fish-scaled snakes with legs. Certain naga depictions also have traits like fish.

* Myth/OceanianMythology: Taniwha is a reptile of sorts, that lives in and breathes the water.

** ''TabletopGame/WarhammerFantasyRPG'': Lakemen are a variant of {{Beastm|an}}en that resemble misshapen humanoid frogs, but also possess gills and crustacean pincers. {{Justified|Trope}}, as they're creatures of Chaos and Chaos habitually causes living things to develop drastic mutations with no regard for taxonomy or sense.

* ''TabletopGame/{{Warhammer}}'': The Lizardmen are a species of LizardFolk divided into a FantasticCasteSystem: three of these breeds are based on lizards first and foremost, but their caste of mages and priests, the Slann, resemble giant toads more than anything else. Further, all castes begin their life in the spawning pools as tadpoles before maturing into their reptilian adult selves.

[[folder:Web Comics]]

* ''WesternAnimation/{{Amphibia}}'': Some of the reptiles possess fish-like features. Notable examples include the water snake in "[[Recap/AmphibiaS1E02BestFronds Best Fronds]" and the garbage lizard in "[[Recap/AmphibiaS1E17LilyPadThai Lily Pad Thai]]".

* Some of the reptiles in ''WesternAnimation/{{Amphibia}}'' possess fish-like features. Most notable examples are the water snake in "Best Fronds" and the garbage lizard in "Lily Pad Thai".

* The ''Film/{{Monsterverse}}'' incarnation of Godzilla may qualify, as, instead of being a dinosaur, he's re-imagined as an aquatic Permian reptile that somehow possesses both lungs and gills.

There is a tendency in fiction to treat all groups of "cold-blooded" creatures as interchangeable and more or less the same thing. This often ends up with the distinct lineages of reptiles, amphibians and fish mixed into one strange package; generally a finned, reptilian or amphibian creature with both lungs and gills. A SeaMonster can have this kind of appearance, as many blend characteristics of fish and reptiles. Alternately, this trope can occur in a single species where some members are LizardFolk, some are FishPeople, others appear to be FrogMen or salamander-like and so on.

There is a tendency in fiction to treat all groups of "cold-blooded" creatures as interchangeable and more or less the same thing. This often ends up with the distinct lineages of reptiles, amphibians and fish mixed into one strange package; generally a finned, reptilian or amphibian creature with both lungs and gills. A SeaMonster can have this kind of appearance, as many blend characteristics of fish and reptiles. Alternately, this trope can occur in a single species where some members are LizardFolk, some are FishPeople, and others appear to be FrogMen or salamander-like.

[[quoteright:350:[[Literature/HarryPotter https://static.tvtropes.org/pmwiki/pub/images/plimpy_me.jpg]]]]
[[caption-width-right:350:A Plimpy, a fish with frog legs.]]

* The Three-Tailed Beast in ''Manga/{{Naruto}}'' looks primarily like a turtle, but also has spikey chitinous armor like a crab and its tails resemble that of a shrimp.

* ''WesternAnimation/IceAgeTheMeltdown'' features two {{Sea Monster}}s named Cretaceous and Maelstrom, both having a combination of reptilian and fish-like features. Cretaceous in particular looks like a crocodile with fish-like fins on his back and tail. They are identified by WordOfGod as an ichthyosaur and a pliosaur, although [[InformedSpecies they don't really look like their respective species]].

* The incarnation of Godzilla in the ''Film/{{Monsterverse}}'' may qualify, as instead of being a dinosaur, he is re-imagined as an aquatic Permian reptile that somehow possesses both lungs and gills similar to an amphibian.

* The {{kaiju}} in ''Film/PacificRim'' mostly look vaguely reptilian with their scaly skin and clawed limbs. However, two individual ones have very shark-like heads, specifically Knifehead, which has the jaws and elongated snout of a goblin shark, and Slattern, which has the distinct head shape of a hammerhead shark. Justified because they were ''constructed'' rather than bred, and incorporate whatever features their makers thought would make them formidable regardless of classification.

* ''WesternAnimation/MyLittlePonyFriendshipIsMagic'':
** Cipactli as a crocodile-faced toad.
** Hydras are also shown to not need air, despite the reptilian-ness.

* In ''Franchise/TheElderScrolls'' series, the Argonians are a "{{Beast |Man}}Race" of swamp-dwelling LizardFolk. Their physiology is chiefly and visibly reptilian, however they also have elements of amphibians (said to be "sequential hermaphrodites", meaning they can switch genders, though this hasn't been brought up in-game other than from a [[UnreliableExpositor dubious source]]) and fish (gills on their necks which allow them to breath underwater, and shows up in-game as a Water Breathing racial ability).

* [[UsefulNotes/NewZealand Māori Mythology]]: Taniwha is a reptile of sorts, that lives in and breathes the water.

* ''TabletopGame/{{Warhammer}}'': The Lizardmen are a species of LizardFolk divided into a FantasticCasteSystem: three of these breeds are based on lizards first and foremost, but their caste of mages and priests, the Slann, resemble giant toads more than anything else.

* The Magikarp/Gyarados family in ''Franchise/{{Pokemon}}'' can be considered this since Magikarp is a fish that evolves into a sea serpent. As of [[VideoGame/PokemonXAndY Generation VI]], Gyarados gets a Mega evolution that looks more like a fish, having a huge dorsal fin and a bigger body.

* [[MakingASplash Water]] [[OurDemonsAreDifferent demons]] in ''Webcomic/SlightlyDamned'' most often resemble LizardFolk but will typically have fins, webbed digits and dehydrate quickly and according to WordOfGod they can all [[SuperNotDrowningSkills breathe underwater.]]

* Some of the MixAndMatchCritters that inhabit the world of ''WesternAnimation/AvatarTheLastAirbender'' qualify for this trope. This includes the catgator (an alligator-like beast with catfish whiskers, living in the Foggy Swamp) and the eponymous serpent of Serpent's Pass (snake-like body with a seahorse-head).

* The incarnation of Godzilla in the ''Franchise/{{Monsterverse}}'' may qualify, as instead of being a dinosaur, he is re-imagined as an aquatic Permian reptile that somehow possesses both lungs and gills similar to an amphibian.

* The incarnation of Godzilla in the ''Franchise/Monsterverse'' may qualify, as instead of being a dinosaur, he is re-imagined as an aquatic Permian reptile that somehow possesses both lungs and gills similar to an amphibian.

* In ''Franchise/TheElderScrolls'' series, the Argonians are a "[[PettingZooPeople Beast Race]]" of swamp-dwelling LizardFolk. Their physiology is chiefly and visibly reptilian, however they also have elements of amphibians (said to be "sequential hermaphrodites", meaning they can switch genders, though this hasn't been brought up in-game other than from a [[UnreliableExpositor dubious source]]) and fish (gills on their necks which allow them to breath underwater, and shows up in-game as a Water Breathing racial ability).

* Myth/AboriginalAustralianMyths: Taniwha is a reptile of sorts, that lives in and breathes the water.