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Films — Live-Action
- The Phantom Menace: The Colo Claw Fish, a Sea Monster living in the oceans of Naboo, has crocodile-like jaws combined with an eel-like body and bioluminescence.
- The kaiju in Pacific Rim all look vaguely reptilian with their scaly skin and clawed limbs. However, two individual ones have very shark-like heads, specifically the Knifehead, which has the jaws and elongated snout of a goblin shark, and the slattern, which has the distinct head shape of a hammerhead shark.
- Harry Potter: Plimpies are small "fish", yet they look a lot like bipedal frogs.
Myths & Religion
- Aztec Mythology: Cipactli is a mixture of a crocodile, a fish and a toad.
- Classical Mythology: Dragons are reptile-amphibians with cat teeth and bat wings, and some have gills. Sea serpents are also fish-snake hybrids.
- Chinese Mythology: Longs are often seen as fish-scaled snakes with legs. Certain naga depictions also have traits like fish.
- Hindu Mythology: The makara is commonly depicted as a crocodile with a fish's tail.
- Aboriginal Australian Myths: Taniwha is a reptile of sorts, that lives in and breathes the water.
- In medieval Christianity and science, warm-blooded animals were usually split between domestic mammals, wild mammals and birds (as seen in the Biblical imagery of four-headed angels with the faces of a lion, ox, eagle and human each, representing these three groups plus mankind). Cold-blooded animals like reptiles, fish and amphibians were instead lumped as a single, mostly homogenous category of "crawling things", at the bottom of the universal chain of being and not worth differentiating. While exceptions were made for larger and more active fish like swordfish, sharks and whales, which were treated as a separate, "nobler" class of animals, other fish like carp or catfish were still lumped in with lizards and frogs.
- The Elder Scrolls: The Argonians are a species of swamp-dwelling Lizard Folk. Their physiology is chiefly and visibly reptilian, and they are described as reptiles throughout the games except for the fact that they also have fishlike gills on their necks.
- The Magikarp/Gyarados family in Pokémon can be considered this since Magikarp is a fish that evolves into a sea serpent. As of Generation VI, Gyarados gets a Mega evolution that looks more like a fish, having a huge dorsal fin and a bigger body.
- The Warcraft franchise features the Murlocs, who are semi-intelligent creatures halfway between Fish People and Frog Men, with piranha-like heads and fins on their back, but frog-like limbs and an amphibious lifestyle.
- Some of the Mix-and-Match Critters that inhabit the world of Avatar: The Last Airbender 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).
- My Little Pony: Friendship Is Magic:
- Cipactli as a crocodile-faced toad.
- Hydras are also shown to not need air, despite the reptilian-ness.
- Coelacanths and lungfishes are two groups of fish that have some amphibian features, such as two pairs of lobe-like fins that resemble limbs, and in the latter group, lungs. Molecular studies showed that they are more closely related to Tetrapods (i.e. land animals, including amphibians and reptiles) than to ray-finned fish.
- Ichthyosaurs were prehistoric reptiles that evolved many fish-like (particularly shark-like) features due to convergent evolution, including a vertical tail fin as well as a dorsal fin. Tellingly, their scientific name means "fish-lizard" in Greek. They still had lungs and had to breathe air, and gave birth to live young, similarly to modern dolphins.