Fish are neither amphibians nor reptiles. They are a distinct group of animals known as “fish” belonging to the taxonomic class “Osteichthyes” or “Chondrichthyes,” depending on the type of fish.
Amphibians are a separate group of vertebrate animals that typically undergo metamorphosis from an aquatic larval stage (such as a tadpole) to a terrestrial adult stage. Amphibians include animals like frogs, toads, salamanders, and newts.
Reptiles, on the other hand, are another group of vertebrate animals that include snakes, lizards, turtles, crocodiles, and alligators. They are characterized by having scaly skin and being ectothermic (cold-blooded).
Fish, however, have their own distinct characteristics and include diverse groups such as bony fish (Osteichthyes) and cartilaginous fish (Chondrichthyes). They are typically aquatic animals with streamlined bodies, fins for swimming, and gills for respiration.
In summary, fish are a unique group of animals separate from amphibians and reptiles, with their own characteristics and evolutionary history.